28031476252 has 24 divisors (see below), whose sum is σ = 52851775536. Its totient is φ = 12931916928.

The previous prime is 28031476229. The next prime is 28031476267. The reversal of 28031476252 is 25267413082.

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, 2103 + ... + 236785.

It is an arithmetic number, because the mean of its divisors is an integer number (2202157314).

Almost surely, 2^28031476252 is an apocalyptic number.

It is an amenable number.

28031476252 is a deficient number, since it is larger than the sum of its proper divisors (24820299284).

28031476252 is a wasteful number, since it uses less digits than its factorization.

28031476252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236997 (or 236995 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28031476252 in words is "twenty-eight billion, thirty-one million, four hundred seventy-six thousand, two hundred fifty-two".