82156822 has 12 divisors (see below), whose sum is σ = 135457308. Its totient is φ = 37343900.

The previous prime is 82156777. The next prime is 82156829. The reversal of 82156822 is 22865128.

It is a super-2 number, since 2×82156822² = 13499486802279368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82156829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169504 + ... + 169987.

It is an arithmetic number, because the mean of its divisors is an integer number (11288109).

Almost surely, 2^82156822 is an apocalyptic number.

82156822 is a deficient number, since it is larger than the sum of its proper divisors (53300486).

82156822 is a wasteful number, since it uses less digits than its factorization.

82156822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339515 (or 339504 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 82156822 is about 9064.0400484552. The cubic root of 82156822 is about 434.7249276051.

The spelling of 82156822 in words is "eighty-two million, one hundred fifty-six thousand, eight hundred twenty-two".