28061057400 has 96 divisors (see below), whose sum is σ = 89795443200. Its totient is φ = 7241558400.

The previous prime is 28061057399. The next prime is 28061057413. The reversal of 28061057400 is 475016082.

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, 735730 + ... + 772929.

It is an arithmetic number, because the mean of its divisors is an integer number (935369200).

Almost surely, 2^28061057400 is an apocalyptic number.

28061057400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28061057400 is an abundant number, since it is smaller than the sum of its proper divisors (61734385800).

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

28061057400 is a wasteful number, since it uses less digits than its factorization.

28061057400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508709 (or 1508700 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 28061057400 in words is "twenty-eight billion, sixty-one million, fifty-seven thousand, four hundred".