83972218 has 32 divisors (see below), whose sum is σ = 144156672. Its totient is φ = 36313200.

The previous prime is 83972201. The next prime is 83972233. The reversal of 83972218 is 81227938.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132763 + ... + 133393.

It is an arithmetic number, because the mean of its divisors is an integer number (4504896).

Almost surely, 2^83972218 is an apocalyptic number.

83972218 is a deficient number, since it is larger than the sum of its proper divisors (60184454).

83972218 is a wasteful number, since it uses less digits than its factorization.

83972218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its digits is 48384, while the sum is 40.

The square root of 83972218 is about 9163.6356322150. The cubic root of 83972218 is about 437.9036262042.

The spelling of 83972218 in words is "eighty-three million, nine hundred seventy-two thousand, two hundred eighteen".