28399410624 has 112 divisors (see below), whose sum is σ = 81110937600. Its totient is φ = 8717675520.

The previous prime is 28399410581. The next prime is 28399410647. The reversal of 28399410624 is 42601499382.

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 15 ways as a sum of consecutive naturals, for example, 1062577 + ... + 1088975.

It is an arithmetic number, because the mean of its divisors is an integer number (724204800).

Almost surely, 2^28399410624 is an apocalyptic number.

28399410624 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 28399410624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40555468800).

28399410624 is an abundant number, since it is smaller than the sum of its proper divisors (52711526976).

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

28399410624 is a wasteful number, since it uses less digits than its factorization.

28399410624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26858 (or 26848 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 28399410624 in words is "twenty-eight billion, three hundred ninety-nine million, four hundred ten thousand, six hundred twenty-four".