28252556 has 12 divisors (see below), whose sum is σ = 51591792. Its totient is φ = 13512048.

The previous prime is 28252541. The next prime is 28252561. The reversal of 28252556 is 65525282.

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, 153455 + ... + 153638.

It is an arithmetic number, because the mean of its divisors is an integer number (4299316).

Almost surely, 2^28252556 is an apocalyptic number.

It is an amenable number.

28252556 is a deficient number, since it is larger than the sum of its proper divisors (23339236).

28252556 is a wasteful number, since it uses less digits than its factorization.

28252556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307120 (or 307118 counting only the distinct ones).

The product of its digits is 48000, while the sum is 35.

The square root of 28252556 is about 5315.3133491827. The cubic root of 28252556 is about 304.5691524820.

The spelling of 28252556 in words is "twenty-eight million, two hundred fifty-two thousand, five hundred fifty-six".