28737222980 has 24 divisors (see below), whose sum is σ = 63524388480. Its totient is φ = 10889894880.

The previous prime is 28737222979. The next prime is 28737223001. The reversal of 28737222980 is 8922273782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37811756 + ... + 37812515.

It is an arithmetic number, because the mean of its divisors is an integer number (2646849520).

Almost surely, 2^28737222980 is an apocalyptic number.

28737222980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28737222980 is an abundant number, since it is smaller than the sum of its proper divisors (34787165500).

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

28737222980 is a wasteful number, since it uses less digits than its factorization.

28737222980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75624299 (or 75624297 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 28737222980 in words is "twenty-eight billion, seven hundred thirty-seven million, two hundred twenty-two thousand, nine hundred eighty".