23690728 has 16 divisors (see below), whose sum is σ = 44668260. Its totient is φ = 11779200.

The previous prime is 23690717. The next prime is 23690761. The reversal of 23690728 is 82709632.

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 3602404 = 4482^2 + 1898^2 .

It is a super-2 number, since 2×23690728² = 1122501186339968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6733 + ... + 9628.

Almost surely, 2^23690728 is an apocalyptic number.

It is an amenable number.

23690728 is a deficient number, since it is larger than the sum of its proper divisors (20977532).

23690728 is a wasteful number, since it uses less digits than its factorization.

23690728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16548 (or 16544 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 23690728 is about 4867.3121946306. The cubic root of 23690728 is about 287.2055329045.

The spelling of 23690728 in words is "twenty-three million, six hundred ninety thousand, seven hundred twenty-eight".