82201790 has 64 divisors (see below), whose sum is σ = 174666240. Its totient is φ = 27527040.

The previous prime is 82201759. The next prime is 82201799. The reversal of 82201790 is 9710228.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82201799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76799 + ... + 77861.

It is an arithmetic number, because the mean of its divisors is an integer number (2729160).

Almost surely, 2^82201790 is an apocalyptic number.

82201790 is an abundant number, since it is smaller than the sum of its proper divisors (92464450).

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

82201790 is a wasteful number, since it uses less digits than its factorization.

82201790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 82201790 is about 9066.5202806810. The cubic root of 82201790 is about 434.8042277554.

The spelling of 82201790 in words is "eighty-two million, two hundred one thousand, seven hundred ninety".