20452800 has 84 divisors (see below), whose sum is σ = 67117976. Its totient is φ = 5452800.

The previous prime is 20452781. The next prime is 20452811. The reversal of 20452800 is 825402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2670 + ... + 6930.

Almost surely, 2^20452800 is an apocalyptic number.

20452800 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 20452800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33558988).

20452800 is an abundant number, since it is smaller than the sum of its proper divisors (46665176).

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

20452800 is a wasteful number, since it uses less digits than its factorization.

20452800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286 (or 4271 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20452800 is about 4522.4771972891. The cubic root of 20452800 is about 273.4749745102.

The spelling of 20452800 in words is "twenty million, four hundred fifty-two thousand, eight hundred".