15764648 has 8 divisors (see below), whose sum is σ = 29558730. Its totient is φ = 7882320.

The previous prime is 15764641. The next prime is 15764653. The reversal of 15764648 is 84646751.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 3247204 = 3538^2 + 1802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (15764641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985283 + ... + 985298.

Almost surely, 2^15764648 is an apocalyptic number.

It is an amenable number.

15764648 is a deficient number, since it is larger than the sum of its proper divisors (13794082).

15764648 is a wasteful number, since it uses less digits than its factorization.

15764648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970587 (or 1970583 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 15764648 is about 3970.4720122424. The cubic root of 15764648 is about 250.7425814407.

The spelling of 15764648 in words is "fifteen million, seven hundred sixty-four thousand, six hundred forty-eight".