28553885240 has 32 divisors (see below), whose sum is σ = 64715204880. Its totient is φ = 11338182912.

The previous prime is 28553885209. The next prime is 28553885291. The reversal of 28553885240 is 4258835582.

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, 2599802 + ... + 2610761.

Almost surely, 2^28553885240 is an apocalyptic number.

28553885240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28553885240 is an abundant number, since it is smaller than the sum of its proper divisors (36161319640).

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

28553885240 is a wasteful number, since it uses less digits than its factorization.

28553885240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210711 (or 5210707 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 50.

The spelling of 28553885240 in words is "twenty-eight billion, five hundred fifty-three million, eight hundred eighty-five thousand, two hundred forty".