621090048 has 72 divisors (see below), whose sum is σ = 1665353088. Its totient is φ = 205484032.

The previous prime is 621090047. The next prime is 621090049. The reversal of 621090048 is 840090126.

It is an interprime number because it is at equal distance from previous prime (621090047) and next prime (621090049).

It is a junction number, because it is equal to n+sod(n) for n = 621089997 and 621090024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621090047) 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, 102265 + ... + 108167.

It is an arithmetic number, because the mean of its divisors is an integer number (23129904).

Almost surely, 2^621090048 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 621090048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832676544).

621090048 is an abundant number, since it is smaller than the sum of its proper divisors (1044263040).

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

621090048 is a wasteful number, since it uses less digits than its factorization.

621090048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059 (or 6045 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 621090048 is about 24921.6782741452. The cubic root of 621090048 is about 853.2013294075.

The spelling of 621090048 in words is "six hundred twenty-one million, ninety thousand, forty-eight".