28980662940 has 72 divisors (see below), whose sum is σ = 88118044560. Its totient is φ = 7709712384.

The previous prime is 28980662927. The next prime is 28980663017. The reversal of 28980662940 is 4926608982.

It is a happy number.

28980662940 is a `hidden beast` number, since 2 + 8 + 9 + 8 + 0 + 6 + 629 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116709 + ... + 267548.

It is an arithmetic number, because the mean of its divisors is an integer number (1223861730).

Almost surely, 2^28980662940 is an apocalyptic number.

28980662940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28980662940 is an abundant number, since it is smaller than the sum of its proper divisors (59137381620).

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

28980662940 is a wasteful number, since it uses less digits than its factorization.

28980662940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384691 (or 384686 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 28980662940 in words is "twenty-eight billion, nine hundred eighty million, six hundred sixty-two thousand, nine hundred forty".