28553285 has 16 divisors (see below), whose sum is σ = 36438336. Its totient is φ = 21404928.

The previous prime is 28553249. The next prime is 28553309. The reversal of 28553285 is 58235582.

It is a cyclic number.

It is not a de Polignac number, because 28553285 - 2¹² = 28549189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23462 + ... + 24648.

It is an arithmetic number, because the mean of its divisors is an integer number (2277396).

Almost surely, 2^28553285 is an apocalyptic number.

It is an amenable number.

28553285 is a deficient number, since it is larger than the sum of its proper divisors (7885051).

28553285 is a wasteful number, since it uses less digits than its factorization.

28553285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492.

The product of its digits is 96000, while the sum is 38.

The square root of 28553285 is about 5343.5273930242. The cubic root of 28553285 is about 305.6459837160.

The spelling of 28553285 in words is "twenty-eight million, five hundred fifty-three thousand, two hundred eighty-five".