28933172490240 has 208 divisors, whose sum is σ = 102860946352800. Its totient is φ = 7715512516608.

The previous prime is 28933172490197. The next prime is 28933172490263. The reversal of 28933172490240 is 4209427133982.

It is a happy number.

28933172490240 is a `hidden beast` number, since 2 + 89 + 3 + 3 + 1 + 72 + 490 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 25609125 + ... + 26715044.

Almost surely, 2^{28933172490240} is an apocalyptic number.

28933172490240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28933172490240 is an abundant number, since it is smaller than the sum of its proper divisors (73927773862560).

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

28933172490240 is an equidigital number, since it uses as much as digits as its factorization.

28933172490240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52324207 (or 52324179 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 28933172490240 in words is "twenty-eight trillion, nine hundred thirty-three billion, one hundred seventy-two million, four hundred ninety thousand, two hundred forty".