82315378 has 4 divisors (see below), whose sum is σ = 123473070. Its totient is φ = 41157688.

The previous prime is 82315357. The next prime is 82315379. The reversal of 82315378 is 87351328.

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

It can be written as a sum of positive squares in only one way, i.e., 75116889 + 7198489 = 8667^2 + 2683^2 .

It is not an unprimeable number, because it can be changed into a prime (82315379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20578843 + ... + 20578846.

Almost surely, 2^82315378 is an apocalyptic number.

82315378 is a deficient number, since it is larger than the sum of its proper divisors (41157692).

82315378 is a wasteful number, since it uses less digits than its factorization.

82315378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41157691.

The product of its digits is 40320, while the sum is 37.

The square root of 82315378 is about 9072.7822634515. The cubic root of 82315378 is about 435.0044091683.

The spelling of 82315378 in words is "eighty-two million, three hundred fifteen thousand, three hundred seventy-eight".