28140749400 has 96 divisors (see below), whose sum is σ = 92367905040. Its totient is φ = 7062773760.

The previous prime is 28140749369. The next prime is 28140749447. The reversal of 28140749400 is 494704182.

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, 1369249 + ... + 1389648.

Almost surely, 2^28140749400 is an apocalyptic number.

28140749400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28140749400 is an abundant number, since it is smaller than the sum of its proper divisors (64227155640).

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

28140749400 is a wasteful number, since it uses less digits than its factorization.

28140749400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758933 (or 2758924 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28140749400 in words is "twenty-eight billion, one hundred forty million, seven hundred forty-nine thousand, four hundred".