3621298320 has 320 divisors, whose sum is σ = 12905840640. Its totient is φ = 932746752.

The previous prime is 3621298297. The next prime is 3621298327. The reversal of 3621298320 is 238921263.

3621298320 is a `hidden beast` number, since 3 + 621 + 2 + 9 + 8 + 3 + 20 = 666.

It is a super-2 number, since 2×3621298320² = 26227603044869644800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3621298327) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11795607 + ... + 11795913.

It is an arithmetic number, because the mean of its divisors is an integer number (40330752).

Almost surely, 2^3621298320 is an apocalyptic number.

3621298320 is a gapful number since it is divisible by the number (30) 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 3621298320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6452920320).

3621298320 is an abundant number, since it is smaller than the sum of its proper divisors (9284542320).

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

3621298320 is a wasteful number, since it uses less digits than its factorization.

3621298320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3621298320 is about 60177.2242630050. The cubic root of 3621298320 is about 1535.6353504500.

The spelling of 3621298320 in words is "three billion, six hundred twenty-one million, two hundred ninety-eight thousand, three hundred twenty".