15804396072 has 48 divisors (see below), whose sum is σ = 42811316340. Its totient is φ = 5267179008.

The previous prime is 15804396067. The next prime is 15804396073. The reversal of 15804396072 is 27069340851.

15804396072 is a `hidden beast` number, since 1 + 5 + 8 + 0 + 4 + 39 + 607 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13984008516 + 1820387556 = 118254^2 + 42666^2 .

It is not an unprimeable number, because it can be changed into a prime (15804396073) 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, 461328 + ... + 494400.

It is a 1-persistent number, because it is pandigital, but 2⋅15804396072 = 31608792144 is not.

Almost surely, 2^15804396072 is an apocalyptic number.

15804396072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15804396072 is an abundant number, since it is smaller than the sum of its proper divisors (27006920268).

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

15804396072 is a wasteful number, since it uses less digits than its factorization.

15804396072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39722 (or 39715 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 15804396072 in words is "fifteen billion, eight hundred four million, three hundred ninety-six thousand, seventy-two".