28759690 has 16 divisors (see below), whose sum is σ = 52972128. Its totient is φ = 11236176.

The previous prime is 28759681. The next prime is 28759769. The reversal of 28759690 is 9695782.

It is a super-2 number, since 2×28759690² = 1654239537792200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28759690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33012 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (3310758).

Almost surely, 2^28759690 is an apocalyptic number.

28759690 is a deficient number, since it is larger than the sum of its proper divisors (24212438).

28759690 is a wasteful number, since it uses less digits than its factorization.

28759690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66933.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 28759690 is about 5362.8061684159. The cubic root of 28759690 is about 306.3806972344.

The spelling of 28759690 in words is "twenty-eight million, seven hundred fifty-nine thousand, six hundred ninety".