83215732 has 24 divisors (see below), whose sum is σ = 154332360. Its totient is φ = 39191040.

The previous prime is 83215729. The next prime is 83215753. The reversal of 83215732 is 23751238.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 78393316 = 2196^2 + 8854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83215694 and 83215703.

It is a congruent number.

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, 3993 + ... + 13504.

It is an arithmetic number, because the mean of its divisors is an integer number (6430515).

Almost surely, 2^83215732 is an apocalyptic number.

83215732 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

83215732 is a deficient number, since it is larger than the sum of its proper divisors (71116628).

83215732 is a wasteful number, since it uses less digits than its factorization.

83215732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571 (or 17569 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 83215732 is about 9122.2657273289. The cubic root of 83215732 is about 436.5846671840.

The spelling of 83215732 in words is "eighty-three million, two hundred fifteen thousand, seven hundred thirty-two".