28113252 has 12 divisors (see below), whose sum is σ = 65597616. Its totient is φ = 9371080.

The previous prime is 28113251. The next prime is 28113259. The reversal of 28113252 is 25231182.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (28113251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171374 + ... + 1171397.

It is an arithmetic number, because the mean of its divisors is an integer number (5466468).

Almost surely, 2^28113252 is an apocalyptic number.

It is an amenable number.

28113252 is an abundant number, since it is smaller than the sum of its proper divisors (37484364).

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

28113252 is a wasteful number, since it uses less digits than its factorization.

28113252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342778 (or 2342776 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 28113252 is about 5302.1931311487. The cubic root of 28113252 is about 304.0677509430.

The spelling of 28113252 in words is "twenty-eight million, one hundred thirteen thousand, two hundred fifty-two".