3218047232 has 72 divisors (see below), whose sum is σ = 6833194200. Its totient is φ = 1507295232.

The previous prime is 3218047229. The next prime is 3218047243. The reversal of 3218047232 is 2327408123.

It can be written as a sum of positive squares in 4 ways, for example, as 1329623296 + 1888423936 = 36464^2 + 43456^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994994 + ... + 998222.

It is an arithmetic number, because the mean of its divisors is an integer number (94905475).

Almost surely, 2^3218047232 is an apocalyptic number.

3218047232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3218047232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3416597100).

3218047232 is an abundant number, since it is smaller than the sum of its proper divisors (3615146968).

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

3218047232 is a wasteful number, since it uses less digits than its factorization.

3218047232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491 (or 3477 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 3218047232 is about 56727.8347198269. The cubic root of 3218047232 is about 1476.3776816173.

The spelling of 3218047232 in words is "three billion, two hundred eighteen million, forty-seven thousand, two hundred thirty-two".