82278275 has 12 divisors (see below), whose sum is σ = 103174200. Its totient is φ = 65081280.

The previous prime is 82278271. The next prime is 82278277. The reversal of 82278275 is 57287228.

It is a happy number.

It is not a de Polignac number, because 82278275 - 2² = 82278271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82278271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16265 + ... + 20714.

It is an arithmetic number, because the mean of its divisors is an integer number (8597850).

Almost surely, 2^82278275 is an apocalyptic number.

82278275 is a deficient number, since it is larger than the sum of its proper divisors (20895925).

82278275 is a wasteful number, since it uses less digits than its factorization.

82278275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37078 (or 37073 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 82278275 is about 9070.7372908711. The cubic root of 82278275 is about 434.9390410902.

It can be divided in two parts, 822 and 78275, that added together give a palindrome (79097).

The spelling of 82278275 in words is "eighty-two million, two hundred seventy-eight thousand, two hundred seventy-five".