28547372 has 12 divisors (see below), whose sum is σ = 57094800. Its totient is φ = 12234576.

The previous prime is 28547371. The next prime is 28547381. The reversal of 28547372 is 27374582.

28547372 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28547371) by changing a digit.

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, 509747 + ... + 509802.

It is an arithmetic number, because the mean of its divisors is an integer number (4757900).

Almost surely, 2^28547372 is an apocalyptic number.

It is an amenable number.

28547372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28547372 is a wasteful number, since it uses less digits than its factorization.

28547372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019560 (or 1019558 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 28547372 is about 5342.9740781703. The cubic root of 28547372 is about 305.6248838733.

It can be divided in two parts, 28 and 547372, that multiplied together give a triangular number (15326416 = T₅₅₃₆).

The spelling of 28547372 in words is "twenty-eight million, five hundred forty-seven thousand, three hundred seventy-two".