621042360 has 128 divisors (see below), whose sum is σ = 1968883200. Its totient is φ = 156280320.

The previous prime is 621042353. The next prime is 621042371. The reversal of 621042360 is 63240126.

It is a super-2 number, since 2×621042360² = 771387225828739200, which contains 22 as substring.

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 621042360.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 959557 + ... + 960203.

It is an arithmetic number, because the mean of its divisors is an integer number (15381900).

Almost surely, 2^621042360 is an apocalyptic number.

621042360 is a gapful number since it is divisible by the number (60) 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 621042360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984441600).

621042360 is an abundant number, since it is smaller than the sum of its proper divisors (1347840840).

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

621042360 is a wasteful number, since it uses less digits than its factorization.

621042360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 621042360 is about 24920.7214983836. The cubic root of 621042360 is about 853.1794922592.

Adding to 621042360 its reverse (63240126), we get a palindrome (684282486).

The spelling of 621042360 in words is "six hundred twenty-one million, forty-two thousand, three hundred sixty".