3216436240 has 40 divisors (see below), whose sum is σ = 7485199488. Its totient is φ = 1285372800.

The previous prime is 3216436207. The next prime is 3216436247. The reversal of 3216436240 is 426346123.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3216436247) 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, 70015 + ... + 106465.

Almost surely, 2^3216436240 is an apocalyptic number.

It is an amenable number.

3216436240 is an abundant number, since it is smaller than the sum of its proper divisors (4268763248).

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

3216436240 is a wasteful number, since it uses less digits than its factorization.

3216436240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37567 (or 37561 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 3216436240 is about 56713.6336342506. The cubic root of 3216436240 is about 1476.1312765292.

The spelling of 3216436240 in words is "three billion, two hundred sixteen million, four hundred thirty-six thousand, two hundred forty".