Search a number
-
+
2315111200 = 25527140759
BaseRepresentation
bin1000100111111101…
…1100101100100000
312222100021211112021
42021333130230200
514220132024300
61021420511224
7111241056223
oct21177345440
95870254467
102315111200
11a88902346
125473ab514
132ab8362ac
1417d6835ba
15d83a8d1a
hex89fdcb20

2315111200 has 72 divisors (see below), whose sum is σ = 5731508160. Its totient is φ = 912979200.

The previous prime is 2315111159. The next prime is 2315111203. The reversal of 2315111200 is 21115132.

2315111200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2315111203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36421 + ... + 77179.

It is an arithmetic number, because the mean of its divisors is an integer number (79604280).

Almost surely, 22315111200 is an apocalyptic number.

2315111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2315111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2865754080).

2315111200 is an abundant number, since it is smaller than the sum of its proper divisors (3416396960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2315111200 is a wasteful number, since it uses less digits than its factorization.

2315111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40850 (or 40837 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2315111200 is about 48115.6024590777. The cubic root of 2315111200 is about 1322.8906654226.

Adding to 2315111200 its reverse (21115132), we get a palindrome (2336226332).

The spelling of 2315111200 in words is "two billion, three hundred fifteen million, one hundred eleven thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 71 80 100 142 160 200 284 355 400 568 710 800 1136 1420 1775 2272 2840 3550 5680 7100 11360 14200 28400 40759 56800 81518 163036 203795 326072 407590 652144 815180 1018975 1304288 1630360 2037950 2893889 3260720 4075900 5787778 6521440 8151800 11575556 14469445 16303600 23151112 28938890 32607200 46302224 57877780 72347225 92604448 115755560 144694450 231511120 289388900 463022240 578777800 1157555600 2315111200