28351572 has 24 divisors (see below), whose sum is σ = 69636000. Its totient is φ = 8953056.

The previous prime is 28351567. The next prime is 28351613. The reversal of 28351572 is 27515382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61947 + ... + 62402.

It is an arithmetic number, because the mean of its divisors is an integer number (2901500).

Almost surely, 2^28351572 is an apocalyptic number.

It is an amenable number.

28351572 is an abundant number, since it is smaller than the sum of its proper divisors (41284428).

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

28351572 is a wasteful number, since it uses less digits than its factorization.

28351572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124375 (or 124373 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 28351572 is about 5324.6194230198. The cubic root of 28351572 is about 304.9245428312.

The spelling of 28351572 in words is "twenty-eight million, three hundred fifty-one thousand, five hundred seventy-two".