2621338290 has 192 divisors, whose sum is σ = 7592921856. Its totient is φ = 624070656.

The previous prime is 2621338277. The next prime is 2621338301. The reversal of 2621338290 is 928331262.

2621338290 is a `hidden beast` number, since 2 + 621 + 3 + 3 + 8 + 29 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5735742 + ... + 5736198.

It is an arithmetic number, because the mean of its divisors is an integer number (39546468).

Almost surely, 2^2621338290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2621338290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3796460928).

2621338290 is an abundant number, since it is smaller than the sum of its proper divisors (4971583566).

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

2621338290 is a wasteful number, since it uses less digits than its factorization.

2621338290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 670 counting only the distinct ones).

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

The square root of 2621338290 is about 51199.0067286466. The cubic root of 2621338290 is about 1378.8203687439.

The spelling of 2621338290 in words is "two billion, six hundred twenty-one million, three hundred thirty-eight thousand, two hundred ninety".