28742561960 has 32 divisors (see below), whose sum is σ = 73909445760. Its totient is φ = 9854592576.

The previous prime is 28742561957. The next prime is 28742561987. The reversal of 28742561960 is 6916524782.

It is a super-2 number, since 2×28742561960² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28742561899 and 28742561908.

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, 51325724 + ... + 51326283.

It is an arithmetic number, because the mean of its divisors is an integer number (2309670180).

Almost surely, 2^28742561960 is an apocalyptic number.

28742561960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28742561960 is an abundant number, since it is smaller than the sum of its proper divisors (45166883800).

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

28742561960 is a wasteful number, since it uses less digits than its factorization.

28742561960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102652025 (or 102652021 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 28742561960 in words is "twenty-eight billion, seven hundred forty-two million, five hundred sixty-one thousand, nine hundred sixty".