28090911740 has 24 divisors (see below), whose sum is σ = 59086549872. Its totient is φ = 11218148480.

The previous prime is 28090911727. The next prime is 28090911757. The reversal of 28090911740 is 4711909082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125866 + ... + 1150545.

It is an arithmetic number, because the mean of its divisors is an integer number (2461939578).

Almost surely, 2^28090911740 is an apocalyptic number.

28090911740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28090911740 is an abundant number, since it is smaller than the sum of its proper divisors (30995638132).

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

28090911740 is a wasteful number, since it uses less digits than its factorization.

28090911740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277037 (or 2277035 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 28090911740 in words is "twenty-eight billion, ninety million, nine hundred eleven thousand, seven hundred forty".