28124815473812 has 12 divisors (see below), whose sum is σ = 49223925793056. Its totient is φ = 14060836675800.

The previous prime is 28124815473809. The next prime is 28124815473847. The reversal of 28124815473812 is 21837451842182.

It is a super-2 number, since 2×28124815473812² (a number of 28 digits) contains 22 as substring.

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, 392724998 + ... + 392796605.

It is an arithmetic number, because the mean of its divisors is an integer number (4101993816088).

Almost surely, 2^{28124815473812} is an apocalyptic number.

It is an amenable number.

28124815473812 is a deficient number, since it is larger than the sum of its proper divisors (21099110319244).

28124815473812 is a wasteful number, since it uses less digits than its factorization.

28124815473812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785530558 (or 785530556 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 56.

The spelling of 28124815473812 in words is "twenty-eight trillion, one hundred twenty-four billion, eight hundred fifteen million, four hundred seventy-three thousand, eight hundred twelve".