28621825972 has 12 divisors (see below), whose sum is σ = 50350438656. Its totient is φ = 14235986360.

The previous prime is 28621825933. The next prime is 28621826027. The reversal of 28621825972 is 27952812682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18730798 + ... + 18732325.

It is an arithmetic number, because the mean of its divisors is an integer number (4195869888).

Almost surely, 2^28621825972 is an apocalyptic number.

It is an amenable number.

28621825972 is a deficient number, since it is larger than the sum of its proper divisors (21728612684).

28621825972 is a wasteful number, since it uses less digits than its factorization.

28621825972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37463318 (or 37463316 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The spelling of 28621825972 in words is "twenty-eight billion, six hundred twenty-one million, eight hundred twenty-five thousand, nine hundred seventy-two".