83797290 has 48 divisors (see below), whose sum is σ = 218324808. Its totient is φ = 22299648.

The previous prime is 83797271. The next prime is 83797321. The reversal of 83797290 is 9279738.

It can be written as a sum of positive squares in 4 ways, for example, as 79014321 + 4782969 = 8889^2 + 2187^2 .

It is a super-2 number, since 2×83797290² = 14043971622688200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85282 + ... + 86258.

Almost surely, 2^83797290 is an apocalyptic number.

83797290 is an abundant number, since it is smaller than the sum of its proper divisors (134527518).

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

83797290 is a wasteful number, since it uses less digits than its factorization.

83797290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 83797290 is about 9154.0859729413. The cubic root of 83797290 is about 437.5993396189.

The spelling of 83797290 in words is "eighty-three million, seven hundred ninety-seven thousand, two hundred ninety".