82241780 has 12 divisors (see below), whose sum is σ = 172707780. Its totient is φ = 32896704.

The previous prime is 82241779. The next prime is 82241807. The reversal of 82241780 is 8714228.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 72829156 = 3068^2 + 8534^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056025 + ... + 2056064.

It is an arithmetic number, because the mean of its divisors is an integer number (14392315).

Almost surely, 2^82241780 is an apocalyptic number.

It is an amenable number.

82241780 is an abundant number, since it is smaller than the sum of its proper divisors (90466000).

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

82241780 is a wasteful number, since it uses less digits than its factorization.

82241780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112098 (or 4112096 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 82241780 is about 9068.7253790155. The cubic root of 82241780 is about 434.8747250126.

The spelling of 82241780 in words is "eighty-two million, two hundred forty-one thousand, seven hundred eighty".