28570894 has 16 divisors (see below), whose sum is σ = 47093760. Its totient is φ = 12891960.

The previous prime is 28570879. The next prime is 28570907. The reversal of 28570894 is 49807582.

It is a self number, because there is not a number n which added to its sum of digits gives 28570894.

It is a congruent number.

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, 1614 + ... + 7729.

It is an arithmetic number, because the mean of its divisors is an integer number (2943360).

Almost surely, 2^28570894 is an apocalyptic number.

28570894 is a deficient number, since it is larger than the sum of its proper divisors (18522866).

28570894 is a wasteful number, since it uses less digits than its factorization.

28570894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9495.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 28570894 is about 5345.1748334362. The cubic root of 28570894 is about 305.7088021052.

The spelling of 28570894 in words is "twenty-eight million, five hundred seventy thousand, eight hundred ninety-four".