3218905880 has 16 divisors (see below), whose sum is σ = 7242538320. Its totient is φ = 1287562336.

The previous prime is 3218905847. The next prime is 3218905883. The reversal of 3218905880 is 885098123.

It is a super-2 number, since 2×3218905880² = 20722710128597148800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218905883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40236284 + ... + 40236363.

It is an arithmetic number, because the mean of its divisors is an integer number (452658645).

Almost surely, 2^3218905880 is an apocalyptic number.

It is an amenable number.

3218905880 is an abundant number, since it is smaller than the sum of its proper divisors (4023632440).

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

3218905880 is a wasteful number, since it uses less digits than its factorization.

3218905880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80472658 (or 80472654 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 3218905880 is about 56735.4023516182. The cubic root of 3218905880 is about 1476.5089802921.

The spelling of 3218905880 in words is "three billion, two hundred eighteen million, nine hundred five thousand, eight hundred eighty".