82294381 has 6 divisors (see below), whose sum is σ = 89111850. Its totient is φ = 75963888.

The previous prime is 82294369. The next prime is 82294403. The reversal of 82294381 is 18349228.

It can be written as a sum of positive squares in 3 ways, for example, as 2924100 + 79370281 = 1710^2 + 8909^2 .

It is not a de Polignac number, because 82294381 - 2¹¹ = 82292333 is a prime.

It is a super-2 number, since 2×82294381² = 13544730288346322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82294381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82294081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243306 + ... + 243643.

It is an arithmetic number, because the mean of its divisors is an integer number (14851975).

Almost surely, 2^82294381 is an apocalyptic number.

It is an amenable number.

82294381 is a deficient number, since it is larger than the sum of its proper divisors (6817469).

82294381 is a wasteful number, since it uses less digits than its factorization.

82294381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486975 (or 486962 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 82294381 is about 9071.6250473661. The cubic root of 82294381 is about 434.9674190598.

The spelling of 82294381 in words is "eighty-two million, two hundred ninety-four thousand, three hundred eighty-one".