82672290 has 24 divisors (see below), whose sum is σ = 214948188. Its totient is φ = 22045920.

The previous prime is 82672279. The next prime is 82672297. The reversal of 82672290 is 9227628.

It can be written as a sum of positive squares in 2 ways, for example, as 81920601 + 751689 = 9051^2 + 867^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82672297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459201 + ... + 459380.

Almost surely, 2^82672290 is an apocalyptic number.

82672290 is an abundant number, since it is smaller than the sum of its proper divisors (132275898).

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

82672290 is a wasteful number, since it uses less digits than its factorization.

82672290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918594 (or 918591 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 82672290 is about 9092.4303681689. The cubic root of 82672290 is about 435.6322158680.

The spelling of 82672290 in words is "eighty-two million, six hundred seventy-two thousand, two hundred ninety".