28357722624 has 480 divisors, whose sum is σ = 96551820288. Its totient is φ = 7238246400.

The previous prime is 28357722577. The next prime is 28357722643. The reversal of 28357722624 is 42622775382.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92370279 + ... + 92370585.

Almost surely, 2^28357722624 is an apocalyptic number.

28357722624 is a gapful number since it is divisible by the number (24) 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 28357722624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48275910144).

28357722624 is an abundant number, since it is smaller than the sum of its proper divisors (68194097664).

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

28357722624 is a wasteful number, since it uses less digits than its factorization.

28357722624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 401 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 48.

The spelling of 28357722624 in words is "twenty-eight billion, three hundred fifty-seven million, seven hundred twenty-two thousand, six hundred twenty-four".