82278344 has 8 divisors (see below), whose sum is σ = 154271910. Its totient is φ = 41139168.

The previous prime is 82278311. The next prime is 82278359. The reversal of 82278344 is 44387228.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81685444 + 592900 = 9038^2 + 770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 82278298 and 82278307.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5142389 + ... + 5142404.

Almost surely, 2^82278344 is an apocalyptic number.

It is an amenable number.

82278344 is a deficient number, since it is larger than the sum of its proper divisors (71993566).

82278344 is a wasteful number, since it uses less digits than its factorization.

82278344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284799 (or 10284795 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 82278344 is about 9070.7410943098. The cubic root of 82278344 is about 434.9391626726.

The spelling of 82278344 in words is "eighty-two million, two hundred seventy-eight thousand, three hundred forty-four".