28023426921600 has 5760 divisors, whose sum is σ = 129942658137600. Its totient is φ = 5912248320000.

The previous prime is 28023426921551. The next prime is 28023426921629. The reversal of 28023426921600 is 612962432082.

28023426921600 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 3 + 426 + 9 + 216 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5760).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 719 ways as a sum of consecutive naturals, for example, 683498217580 + ... + 683498217620.

It is an arithmetic number, because the mean of its divisors is an integer number (22559489260).

Almost surely, 2^{28023426921600} is an apocalyptic number.

28023426921600 is a gapful number since it is divisible by the number (20) 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 28023426921600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64971329068800).

28023426921600 is an abundant number, since it is smaller than the sum of its proper divisors (101919231216000).

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

28023426921600 is a wasteful number, since it uses less digits than its factorization.

28023426921600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 28023426921600 in words is "twenty-eight trillion, twenty-three billion, four hundred twenty-six million, nine hundred twenty-one thousand, six hundred".