82231878 has 16 divisors (see below), whose sum is σ = 170135280. Its totient is φ = 26465376.

The previous prime is 82231861. The next prime is 82231879. The reversal of 82231878 is 87813228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82231879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236125 + ... + 236472.

It is an arithmetic number, because the mean of its divisors is an integer number (10633455).

Almost surely, 2^82231878 is an apocalyptic number.

82231878 is an abundant number, since it is smaller than the sum of its proper divisors (87903402).

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

82231878 is a wasteful number, since it uses less digits than its factorization.

82231878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472631.

The product of its digits is 43008, while the sum is 39.

The square root of 82231878 is about 9068.1794203688. The cubic root of 82231878 is about 434.8572711817.

It can be divided in two parts, 8223 and 1878, that added together give a palindrome (10101).

The spelling of 82231878 in words is "eighty-two million, two hundred thirty-one thousand, eight hundred seventy-eight".