15730772 has 24 divisors (see below), whose sum is σ = 28494984. Its totient is φ = 7592832.

The previous prime is 15730747. The next prime is 15730777. The reversal of 15730772 is 27703751.

It can be written as a sum of positive squares in 4 ways, for example, as 9156676 + 6574096 = 3026^2 + 2564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15730777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22898 + ... + 23574.

It is an arithmetic number, because the mean of its divisors is an integer number (1187291).

Almost surely, 2^15730772 is an apocalyptic number.

It is an amenable number.

15730772 is a deficient number, since it is larger than the sum of its proper divisors (12764212).

15730772 is a wasteful number, since it uses less digits than its factorization.

15730772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 15730772 is about 3966.2037264871. The cubic root of 15730772 is about 250.5628491855.

It can be divided in two parts, 157 and 30772, that multiplied together give a square (4831204 = 2198²).

The spelling of 15730772 in words is "fifteen million, seven hundred thirty thousand, seven hundred seventy-two".