28892552 has 16 divisors (see below), whose sum is σ = 58340940. Its totient is φ = 13334976.

The previous prime is 28892543. The next prime is 28892587. The reversal of 28892552 is 25529882.

It can be written as a sum of positive squares in 2 ways, for example, as 28793956 + 98596 = 5366^2 + 314^2 .

It is a super-2 number, since 2×28892552² = 1669559122145408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138803 + ... + 139010.

Almost surely, 2^28892552 is an apocalyptic number.

It is an amenable number.

28892552 is an abundant number, since it is smaller than the sum of its proper divisors (29448388).

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

28892552 is a wasteful number, since it uses less digits than its factorization.

28892552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277832 (or 277828 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 28892552 is about 5375.1792528250. The cubic root of 28892552 is about 306.8517712558.

The spelling of 28892552 in words is "twenty-eight million, eight hundred ninety-two thousand, five hundred fifty-two".