28913902080 has 320 divisors, whose sum is σ = 111202882560. Its totient is φ = 6260834304.

The previous prime is 28913902067. The next prime is 28913902133. The reversal of 28913902080 is 8020931982.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007287 + ... + 1035593.

It is an arithmetic number, because the mean of its divisors is an integer number (347509008).

Almost surely, 2^28913902080 is an apocalyptic number.

28913902080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28913902080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55601441280).

28913902080 is an abundant number, since it is smaller than the sum of its proper divisors (82288980480).

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

28913902080 is a wasteful number, since it uses less digits than its factorization.

28913902080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28359 (or 28343 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 28913902080 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred two thousand, eighty".