3216733640 has 32 divisors (see below), whose sum is σ = 7252200000. Its totient is φ = 1284106944.

The previous prime is 3216733537. The next prime is 3216733643. The reversal of 3216733640 is 463376123.

It is a self number, because there is not a number n which added to its sum of digits gives 3216733640.

It is not an unprimeable number, because it can be changed into a prime (3216733643) 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, 60620 + ... + 100539.

It is an arithmetic number, because the mean of its divisors is an integer number (226631250).

Almost surely, 2^3216733640 is an apocalyptic number.

It is an amenable number.

3216733640 is an abundant number, since it is smaller than the sum of its proper divisors (4035466360).

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

3216733640 is a wasteful number, since it uses less digits than its factorization.

3216733640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161669 (or 161665 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 3216733640 is about 56716.2555181493. The cubic root of 3216733640 is about 1476.1767707635.

The spelling of 3216733640 in words is "three billion, two hundred sixteen million, seven hundred thirty-three thousand, six hundred forty".