82277438 has 4 divisors (see below), whose sum is σ = 123416160. Its totient is φ = 41138718.

The previous prime is 82277431. The next prime is 82277449. The reversal of 82277438 is 83477228.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 82277395 and 82277404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82277431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20569358 + ... + 20569361.

It is an arithmetic number, because the mean of its divisors is an integer number (30854040).

Almost surely, 2^82277438 is an apocalyptic number.

82277438 is a deficient number, since it is larger than the sum of its proper divisors (41138722).

82277438 is a wasteful number, since it uses less digits than its factorization.

82277438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41138721.

The product of its digits is 150528, while the sum is 41.

The square root of 82277438 is about 9070.6911533797. The cubic root of 82277438 is about 434.9375662366.

The spelling of 82277438 in words is "eighty-two million, two hundred seventy-seven thousand, four hundred thirty-eight".