621132800 has 132 divisors (see below), whose sum is σ = 1621960920. Its totient is φ = 235192320.

The previous prime is 621132793. The next prime is 621132877. The reversal of 621132800 is 8231126.

It is a zygodrome in base 5.

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, 485762 + ... + 487038.

Almost surely, 2^621132800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621132800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810980460).

621132800 is an abundant number, since it is smaller than the sum of its proper divisors (1000828120).

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

621132800 is a wasteful number, since it uses less digits than its factorization.

621132800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 621132800 is about 24922.5359865323. The cubic root of 621132800 is about 853.2209053270.

Adding to 621132800 its reverse (8231126), we get a palindrome (629363926).

The spelling of 621132800 in words is "six hundred twenty-one million, one hundred thirty-two thousand, eight hundred".