28252408 has 16 divisors (see below), whose sum is σ = 54682560. Its totient is φ = 13670400.

The previous prime is 28252397. The next prime is 28252447. The reversal of 28252408 is 80425282.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 28252408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56713 + ... + 57208.

It is an arithmetic number, because the mean of its divisors is an integer number (3417660).

Almost surely, 2^28252408 is an apocalyptic number.

It is an amenable number.

28252408 is a deficient number, since it is larger than the sum of its proper divisors (26430152).

28252408 is a wasteful number, since it uses less digits than its factorization.

28252408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113958 (or 113954 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28252408 is about 5315.2994271254. The cubic root of 28252408 is about 304.5686206562.

The spelling of 28252408 in words is "twenty-eight million, two hundred fifty-two thousand, four hundred eight".