28470552 has 32 divisors (see below), whose sum is σ = 77647680. Its totient is φ = 8627360.

The previous prime is 28470499. The next prime is 28470613. The reversal of 28470552 is 25507482.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 53658 + ... + 54185.

It is an arithmetic number, because the mean of its divisors is an integer number (2426490).

Almost surely, 2^28470552 is an apocalyptic number.

28470552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28470552 is an abundant number, since it is smaller than the sum of its proper divisors (49177128).

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

28470552 is a wasteful number, since it uses less digits than its factorization.

28470552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107863 (or 107859 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 28470552 is about 5335.7803552995. The cubic root of 28470552 is about 305.3504955722.

The spelling of 28470552 in words is "twenty-eight million, four hundred seventy thousand, five hundred fifty-two".