28915896020 has 48 divisors (see below), whose sum is σ = 70140385728. Its totient is φ = 9896348160.

The previous prime is 28915896017. The next prime is 28915896041. The reversal of 28915896020 is 2069851982.

It is a super-2 number, since 2×28915896020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28915896020.

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 15 ways as a sum of consecutive naturals, for example, 3862022 + ... + 3869501.

It is an arithmetic number, because the mean of its divisors is an integer number (1461258036).

Almost surely, 2^28915896020 is an apocalyptic number.

28915896020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28915896020 is an abundant number, since it is smaller than the sum of its proper divisors (41224489708).

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

28915896020 is a wasteful number, since it uses less digits than its factorization.

28915896020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731560 (or 7731558 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 28915896020 in words is "twenty-eight billion, nine hundred fifteen million, eight hundred ninety-six thousand, twenty".