15649252 has 12 divisors (see below), whose sum is σ = 27772416. Its totient is φ = 7714280.

The previous prime is 15649211. The next prime is 15649253. The reversal of 15649252 is 25294651.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15649253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27268 + ... + 27835.

It is an arithmetic number, because the mean of its divisors is an integer number (2314368).

Almost surely, 2^15649252 is an apocalyptic number.

It is an amenable number.

15649252 is a deficient number, since it is larger than the sum of its proper divisors (12123164).

15649252 is a wasteful number, since it uses less digits than its factorization.

15649252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55178 (or 55176 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 15649252 is about 3955.9135480948. The cubic root of 15649252 is about 250.1292771382.

It can be divided in two parts, 1564 and 9252, that added together give a square (10816 = 104²).

The spelling of 15649252 in words is "fifteen million, six hundred forty-nine thousand, two hundred fifty-two".