28527690 has 32 divisors (see below), whose sum is σ = 69338880. Its totient is φ = 7510464.

The previous prime is 28527679. The next prime is 28527713. The reversal of 28527690 is 9672582.

It is a happy number.

It is a super-2 number, since 2×28527690² = 1627658193472200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3649 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (2166840).

Almost surely, 2^28527690 is an apocalyptic number.

28527690 is an abundant number, since it is smaller than the sum of its proper divisors (40811190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28527690 is a wasteful number, since it uses less digits than its factorization.

28527690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12126.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28527690 is about 5341.1319025091. The cubic root of 28527690 is about 305.5546299819.

The spelling of 28527690 in words is "twenty-eight million, five hundred twenty-seven thousand, six hundred ninety".