621962240 has 88 divisors (see below), whose sum is σ = 1500565632. Its totient is φ = 247357440.

The previous prime is 621962239. The next prime is 621962249. The reversal of 621962240 is 42269126.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 621962197 and 621962206.

It is not an unprimeable number, because it can be changed into a prime (621962249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694537 + ... + 1694903.

Almost surely, 2^621962240 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 621962240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750282816).

621962240 is an abundant number, since it is smaller than the sum of its proper divisors (878603392).

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

621962240 is a wasteful number, since it uses less digits than its factorization.

621962240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 621962240 is about 24939.1707961592. The cubic root of 621962240 is about 853.6005239690.

The spelling of 621962240 in words is "six hundred twenty-one million, nine hundred sixty-two thousand, two hundred forty".