20732344400 has 30 divisors (see below), whose sum is σ = 49809458382. Its totient is φ = 8292937600.

The previous prime is 20732344379. The next prime is 20732344469. The reversal of 20732344400 is 444323702.

It can be written as a sum of positive squares in 3 ways, for example, as 81504784 + 20650839616 = 9028^2 + 143704^2 .

It is a super-2 number, since 2×20732344400² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25915031 + ... + 25915830.

Almost surely, 2^20732344400 is an apocalyptic number.

20732344400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20732344400 is an abundant number, since it is smaller than the sum of its proper divisors (29077113982).

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

20732344400 is a wasteful number, since it uses less digits than its factorization.

20732344400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51830879 (or 51830868 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 29.

The spelling of 20732344400 in words is "twenty billion, seven hundred thirty-two million, three hundred forty-four thousand, four hundred".