28527500 has 30 divisors (see below), whose sum is σ = 62389404. Its totient is φ = 11410000.

The previous prime is 28527497. The next prime is 28527517. The reversal of 28527500 is 572582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3206 + ... + 8205.

Almost surely, 2^28527500 is an apocalyptic number.

28527500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28527500 is an abundant number, since it is smaller than the sum of its proper divisors (33861904).

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

28527500 is a wasteful number, since it uses less digits than its factorization.

28527500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435 (or 11418 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 28527500 is about 5341.1141159874. The cubic root of 28527500 is about 305.5539516292.

The spelling of 28527500 in words is "twenty-eight million, five hundred twenty-seven thousand, five hundred".