2621795904 has 224 divisors, whose sum is σ = 9486839040. Its totient is φ = 691421184.

The previous prime is 2621795893. The next prime is 2621795933. The reversal of 2621795904 is 4095971262.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 2621795904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148912 + ... + 165584.

It is an arithmetic number, because the mean of its divisors is an integer number (42351960).

Almost surely, 2^2621795904 is an apocalyptic number.

2621795904 is a gapful number since it is divisible by the number (24) 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 2621795904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4743419520).

2621795904 is an abundant number, since it is smaller than the sum of its proper divisors (6865043136).

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

2621795904 is a wasteful number, since it uses less digits than its factorization.

2621795904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16714 (or 16698 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 2621795904 is about 51203.4755070396. The cubic root of 2621795904 is about 1378.9005988556.

The spelling of 2621795904 in words is "two billion, six hundred twenty-one million, seven hundred ninety-five thousand, nine hundred four".