15287344164 has 45 divisors (see below), whose sum is σ = 39969956257. Its totient is φ = 5095039536.

The previous prime is 15287344157. The next prime is 15287344169. The reversal of 15287344164 is 46144378251.

The square root of 15287344164 is 123642.

It is a perfect power (a square), and thus also a powerful number.

15287344164 is a `hidden beast` number, since 1 + 528 + 73 + 44 + 16 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 217326564 + 15070017600 = 14742^2 + 122760^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15287344169) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2222122 + ... + 2228990.

Almost surely, 2^15287344164 is an apocalyptic number.

15287344164 is the 123642-nd square number.

It is an amenable number.

15287344164 is an abundant number, since it is smaller than the sum of its proper divisors (24682612093).

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

15287344164 is an frugal number, since it uses more digits than its factorization.

15287344164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754 (or 6874 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 15287344164 in words is "fifteen billion, two hundred eighty-seven million, three hundred forty-four thousand, one hundred sixty-four".