28184629972 has 48 divisors (see below), whose sum is σ = 52952811520. Its totient is φ = 13101004800.

The previous prime is 28184629969. The next prime is 28184629981. The reversal of 28184629972 is 27992648182.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323572 + ... + 401332.

Almost surely, 2^28184629972 is an apocalyptic number.

It is an amenable number.

28184629972 is a deficient number, since it is larger than the sum of its proper divisors (24768181548).

28184629972 is a wasteful number, since it uses less digits than its factorization.

28184629972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77912 (or 77910 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The spelling of 28184629972 in words is "twenty-eight billion, one hundred eighty-four million, six hundred twenty-nine thousand, nine hundred seventy-two".