621162240 has 72 divisors (see below), whose sum is σ = 1983849168. Its totient is φ = 165642240.

The previous prime is 621162229. The next prime is 621162257. The reversal of 621162240 is 42261126.

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

It is a self number, because there is not a number n which added to its sum of digits gives 621162240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77041 + ... + 84720.

Almost surely, 2^621162240 is an apocalyptic number.

621162240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

621162240 is an abundant number, since it is smaller than the sum of its proper divisors (1362686928).

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

621162240 is a wasteful number, since it uses less digits than its factorization.

621162240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161785 (or 161771 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 621162240 is about 24923.1266096371. The cubic root of 621162240 is about 853.2343852283.

The spelling of 621162240 in words is "six hundred twenty-one million, one hundred sixty-two thousand, two hundred forty".