28252664 has 16 divisors (see below), whose sum is σ = 57789720. Its totient is φ = 12842080.

The previous prime is 28252661. The next prime is 28252669. The reversal of 28252664 is 46625282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28252661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160439 + ... + 160614.

Almost surely, 2^28252664 is an apocalyptic number.

It is an amenable number.

28252664 is an abundant number, since it is smaller than the sum of its proper divisors (29537056).

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

28252664 is a wasteful number, since it uses less digits than its factorization.

28252664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321070 (or 321066 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 28252664 is about 5315.3235084988. The cubic root of 28252664 is about 304.5695405699.

The spelling of 28252664 in words is "twenty-eight million, two hundred fifty-two thousand, six hundred sixty-four".