3216293440 has 28 divisors (see below), whose sum is σ = 7658799516. Its totient is φ = 1286517248.

The previous prime is 3216293429. The next prime is 3216293449. The reversal of 3216293440 is 443926123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1448259136 + 1768034304 = 38056^2 + 42048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3216293396 and 3216293405.

It is not an unprimeable number, because it can be changed into a prime (3216293449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025139 + ... + 5025778.

Almost surely, 2^3216293440 is an apocalyptic number.

It is an amenable number.

3216293440 is an abundant number, since it is smaller than the sum of its proper divisors (4442506076).

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

3216293440 is a wasteful number, since it uses less digits than its factorization.

3216293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050934 (or 10050924 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 3216293440 is about 56712.3746637363. The cubic root of 3216293440 is about 1476.1094309575.

The spelling of 3216293440 in words is "three billion, two hundred sixteen million, two hundred ninety-three thousand, four hundred forty".