28957514020 has 24 divisors (see below), whose sum is σ = 60870499200. Its totient is φ = 11571630432.

The previous prime is 28957513999. The next prime is 28957514023. The reversal of 28957514020 is 2041575982.

It is not an unprimeable number, because it can be changed into a prime (28957514023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690060 + ... + 730819.

It is an arithmetic number, because the mean of its divisors is an integer number (2536270800).

Almost surely, 2^28957514020 is an apocalyptic number.

28957514020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28957514020 is an abundant number, since it is smaller than the sum of its proper divisors (31912985180).

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

28957514020 is a wasteful number, since it uses less digits than its factorization.

28957514020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421907 (or 1421905 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 28957514020 in words is "twenty-eight billion, nine hundred fifty-seven million, five hundred fourteen thousand, twenty".