28647250 has 64 divisors (see below), whose sum is σ = 58331520. Its totient is φ = 10497600.

The previous prime is 28647221. The next prime is 28647341. The reversal of 28647250 is 5274682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175669 + ... + 175831.

It is an arithmetic number, because the mean of its divisors is an integer number (911430).

Almost surely, 2^28647250 is an apocalyptic number.

28647250 is an abundant number, since it is smaller than the sum of its proper divisors (29684270).

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

28647250 is a wasteful number, since it uses less digits than its factorization.

28647250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 28647250 is about 5352.3125842948. The cubic root of 28647250 is about 305.9808964678.

The spelling of 28647250 in words is "twenty-eight million, six hundred forty-seven thousand, two hundred fifty".