15604423400 has 48 divisors (see below), whose sum is σ = 36687969900. Its totient is φ = 6171630080.

The previous prime is 15604423397. The next prime is 15604423409. The reversal of 15604423400 is 432440651.

It can be written as a sum of positive squares in 6 ways, for example, as 6404160676 + 9200262724 = 80026^2 + 95918^2 .

It is not an unprimeable number, because it can be changed into a prime (15604423409) 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, 420527 + ... + 456126.

Almost surely, 2^15604423400 is an apocalyptic number.

15604423400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15604423400 is an abundant number, since it is smaller than the sum of its proper divisors (21083546500).

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

15604423400 is a wasteful number, since it uses less digits than its factorization.

15604423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876758 (or 876749 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 15604423400 in words is "fifteen billion, six hundred four million, four hundred twenty-three thousand, four hundred".