Search a number
-
+
30830752500 = 2235423367487
BaseRepresentation
bin11100101101101001…
…111111001011110100
32221120122111111120020
4130231221333023310
51001120133040000
622055150005140
72141005033542
oct345551771364
987518444506
1030830752500
1112091179749
125b851a67b0
132ba4524622
1416c68dad92
15c06a27ba0
hex72da7f2f4

30830752500 has 240 divisors, whose sum is σ = 94251429888. Its totient is φ = 7826544000.

The previous prime is 30830752499. The next prime is 30830752501. The reversal of 30830752500 is 525703803.

It is an interprime number because it is at equal distance from previous prime (30830752499) and next prime (30830752501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30830752501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 63307257 + ... + 63307743.

Almost surely, 230830752500 is an apocalyptic number.

30830752500 is a gapful number since it is divisible by the number (30) 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 30830752500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47125714944).

30830752500 is an abundant number, since it is smaller than the sum of its proper divisors (63420677388).

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

30830752500 is a wasteful number, since it uses less digits than its factorization.

30830752500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 30830752500 in words is "thirty billion, eight hundred thirty million, seven hundred fifty-two thousand, five hundred".