28874276809980 has 96 divisors (see below), whose sum is σ = 94141038426624. Its totient is φ = 6475309511424.

The previous prime is 28874276809933. The next prime is 28874276810083. The reversal of 28874276809980 is 8990867247882.

It is a super-2 number, since 2×28874276809980² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28874276809896 and 28874276809905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 648546402 + ... + 648590921.

It is an arithmetic number, because the mean of its divisors is an integer number (980635816944).

Almost surely, 2^{28874276809980} is an apocalyptic number.

28874276809980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28874276809980 is an abundant number, since it is smaller than the sum of its proper divisors (65266761616644).

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

28874276809980 is a wasteful number, since it uses less digits than its factorization.

28874276809980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297137395 (or 1297137393 counting only the distinct ones).

The product of its (nonzero) digits is 1560674304, while the sum is 78.

The spelling of 28874276809980 in words is "twenty-eight trillion, eight hundred seventy-four billion, two hundred seventy-six million, eight hundred nine thousand, nine hundred eighty".