3221474640 has 80 divisors (see below), whose sum is σ = 10113043200. Its totient is φ = 848180736.

The previous prime is 3221474623. The next prime is 3221474651. The reversal of 3221474640 is 464741223.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65995 + ... + 103914.

It is an arithmetic number, because the mean of its divisors is an integer number (126413040).

Almost surely, 2^3221474640 is an apocalyptic number.

3221474640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221474640 is an abundant number, since it is smaller than the sum of its proper divisors (6891568560).

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

3221474640 is a wasteful number, since it uses less digits than its factorization.

3221474640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170004 (or 169998 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 3221474640 is about 56758.0359068212. The cubic root of 3221474640 is about 1476.9016384275.

The spelling of 3221474640 in words is "three billion, two hundred twenty-one million, four hundred seventy-four thousand, six hundred forty".