28334691972 has 60 divisors (see below), whose sum is σ = 74092348176. Its totient is φ = 9442364400.

The previous prime is 28334691943. The next prime is 28334692033. The reversal of 28334691972 is 27919643382.

28334691972 is a `hidden beast` number, since 283 + 346 + 9 + 19 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1497523 + ... + 1516325.

Almost surely, 2^28334691972 is an apocalyptic number.

It is an amenable number.

28334691972 is an abundant number, since it is smaller than the sum of its proper divisors (45757656204).

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

28334691972 is a wasteful number, since it uses less digits than its factorization.

28334691972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23470 (or 23459 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 28334691972 in words is "twenty-eight billion, three hundred thirty-four million, six hundred ninety-one thousand, nine hundred seventy-two".