82271940 has 48 divisors (see below), whose sum is σ = 231154560. Its totient is φ = 21863680.

The previous prime is 82271939. The next prime is 82271941. The reversal of 82271940 is 4917228.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82271939) and next prime (82271941).

It is a super-2 number, since 2×82271940² = 13537344222727200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82271941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16456 + ... + 20864.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^82271940 is an apocalyptic number.

It is an amenable number.

82271940 is an abundant number, since it is smaller than the sum of its proper divisors (148882620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82271940 is a wasteful number, since it uses less digits than its factorization.

82271940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 82271940 is about 9070.3880843104. The cubic root of 82271940 is about 434.9278781210.

The spelling of 82271940 in words is "eighty-two million, two hundred seventy-one thousand, nine hundred forty".