28251426832 has 20 divisors (see below), whose sum is σ = 54838333996. Its totient is φ = 14099598720.

The previous prime is 28251426823. The next prime is 28251426839. The reversal of 28251426832 is 23862415282.

It can be written as a sum of positive squares in 2 ways, for example, as 13378160896 + 14873265936 = 115664^2 + 121956^2 .

It is not an unprimeable number, because it can be changed into a prime (28251426839) 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, 1623243 + ... + 1640554.

Almost surely, 2^28251426832 is an apocalyptic number.

It is an amenable number.

28251426832 is a deficient number, since it is larger than the sum of its proper divisors (26586907164).

28251426832 is a wasteful number, since it uses less digits than its factorization.

28251426832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264346 (or 3264340 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The spelling of 28251426832 in words is "twenty-eight billion, two hundred fifty-one million, four hundred twenty-six thousand, eight hundred thirty-two".