28535288 has 32 divisors (see below), whose sum is σ = 55404000. Its totient is φ = 13767552.

The previous prime is 28535279. The next prime is 28535293. The reversal of 28535288 is 88253582.

It is a super-2 number, since 2×28535288² = 1628525322485888, which contains 22 as substring.

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, 43781 + ... + 44427.

It is an arithmetic number, because the mean of its divisors is an integer number (1731375).

Almost surely, 2^28535288 is an apocalyptic number.

It is an amenable number.

28535288 is a deficient number, since it is larger than the sum of its proper divisors (26868712).

28535288 is a wasteful number, since it uses less digits than its factorization.

28535288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 28535288 is about 5341.8431276105. The cubic root of 28535288 is about 305.5817544821.

The spelling of 28535288 in words is "twenty-eight million, five hundred thirty-five thousand, two hundred eighty-eight".