28733976240 has 40 divisors (see below), whose sum is σ = 89075327088. Its totient is φ = 7662393600.

The previous prime is 28733976221. The next prime is 28733976281. The reversal of 28733976240 is 4267933782.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59862211 + ... + 59862690.

Almost surely, 2^28733976240 is an apocalyptic number.

28733976240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28733976240 is an abundant number, since it is smaller than the sum of its proper divisors (60341350848).

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

28733976240 is a wasteful number, since it uses less digits than its factorization.

28733976240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119724917 (or 119724911 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 28733976240 in words is "twenty-eight billion, seven hundred thirty-three million, nine hundred seventy-six thousand, two hundred forty".