83397220 has 48 divisors (see below), whose sum is σ = 178516800. Its totient is φ = 32722560.

The previous prime is 83397211. The next prime is 83397227. The reversal of 83397220 is 2279338.

It is not an unprimeable number, because it can be changed into a prime (83397227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364066 + ... + 364294.

It is an arithmetic number, because the mean of its divisors is an integer number (3719100).

Almost surely, 2^83397220 is an apocalyptic number.

It is an amenable number.

83397220 is an abundant number, since it is smaller than the sum of its proper divisors (95119580).

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

83397220 is a wasteful number, since it uses less digits than its factorization.

83397220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 83397220 is about 9132.2078381955. The cubic root of 83397220 is about 436.9018241440.

The spelling of 83397220 in words is "eighty-three million, three hundred ninety-seven thousand, two hundred twenty".