621133152 has 48 divisors (see below), whose sum is σ = 1635182640. Its totient is φ = 206446592.

The previous prime is 621133141. The next prime is 621133169. The reversal of 621133152 is 251331126.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24724 + ... + 43052.

It is an arithmetic number, because the mean of its divisors is an integer number (34066305).

Almost surely, 2^621133152 is an apocalyptic number.

It is an amenable number.

621133152 is an abundant number, since it is smaller than the sum of its proper divisors (1014049488).

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

621133152 is a wasteful number, since it uses less digits than its factorization.

621133152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18695 (or 18687 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 621133152 is about 24922.5430484130. The cubic root of 621133152 is about 853.2210665022.

Adding to 621133152 its reverse (251331126), we get a palindrome (872464278).

The spelling of 621133152 in words is "six hundred twenty-one million, one hundred thirty-three thousand, one hundred fifty-two".