3408990720 has 80 divisors (see below), whose sum is σ = 10898141760. Its totient is φ = 909062144.

The previous prime is 3408990661. The next prime is 3408990721. The reversal of 3408990720 is 270998043.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3408990720² = 23242435458092236800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3408990721) 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, 214260 + ... + 229619.

It is an arithmetic number, because the mean of its divisors is an integer number (136226772).

Almost surely, 2^3408990720 is an apocalyptic number.

3408990720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3408990720 is an abundant number, since it is smaller than the sum of its proper divisors (7489151040).

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

3408990720 is an equidigital number, since it uses as much as digits as its factorization.

3408990720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443905 (or 443889 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 3408990720 is about 58386.5628376941. The cubic root of 3408990720 is about 1505.0188509171.

The spelling of 3408990720 in words is "three billion, four hundred eight million, nine hundred ninety thousand, seven hundred twenty".