28901983240 has 64 divisors (see below), whose sum is σ = 72290856960. Its totient is φ = 10327253760.

The previous prime is 28901983189. The next prime is 28901983309. The reversal of 28901983240 is 4238910982.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880344 + ... + 912583.

It is an arithmetic number, because the mean of its divisors is an integer number (1129544640).

Almost surely, 2^28901983240 is an apocalyptic number.

28901983240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28901983240 is an abundant number, since it is smaller than the sum of its proper divisors (43388873720).

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

28901983240 is a wasteful number, since it uses less digits than its factorization.

28901983240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792982 (or 1792978 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 28901983240 in words is "twenty-eight billion, nine hundred one million, nine hundred eighty-three thousand, two hundred forty".