Search a number
-
+
2158592000 = 215531731
BaseRepresentation
bin1000000010101001…
…1000000000000000
312120102202211112212
42000222120000000
513410044421000
6554110041252
7104330505065
oct20052300000
95512684485
102158592000
11a08518134
12502aa9228
13285293c96
1416697cc6c
15c978cc35
hex80a98000

2158592000 has 256 divisors, whose sum is σ = 5888712960. Its totient is φ = 786432000.

The previous prime is 2158591993. The next prime is 2158592041. The reversal of 2158592000 is 2958512.

It is a tau number, because it is divible by the number of its divisors (256).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69631985 + ... + 69632015.

It is an arithmetic number, because the mean of its divisors is an integer number (23002785).

Almost surely, 22158592000 is an apocalyptic number.

2158592000 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 2158592000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944356480).

2158592000 is an abundant number, since it is smaller than the sum of its proper divisors (3730120960).

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

2158592000 is an frugal number, since it uses more digits than its factorization.

2158592000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 2158592000 is about 46460.6500169767. The cubic root of 2158592000 is about 1292.3798785190.

The spelling of 2158592000 in words is "two billion, one hundred fifty-eight million, five hundred ninety-two thousand".