20534392800 has 216 divisors, whose sum is σ = 73431081360. Its totient is φ = 5398579200.

The previous prime is 20534392799. The next prime is 20534392841. The reversal of 20534392800 is 829343502.

It is a super-2 number, since 2×20534392800² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 491116 + ... + 531284.

It is an arithmetic number, because the mean of its divisors is an integer number (339958710).

Almost surely, 2^20534392800 is an apocalyptic number.

20534392800 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 20534392800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36715540680).

20534392800 is an abundant number, since it is smaller than the sum of its proper divisors (52896688560).

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

20534392800 is a wasteful number, since it uses less digits than its factorization.

20534392800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40266 (or 40250 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20534392800 in words is "twenty billion, five hundred thirty-four million, three hundred ninety-two thousand, eight hundred".