82271970 has 64 divisors (see below), whose sum is σ = 239345280. Its totient is φ = 19944000.

The previous prime is 82271963. The next prime is 82271977. The reversal of 82271970 is 7917228.

It is an interprime number because it is at equal distance from previous prime (82271963) and next prime (82271977).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82271977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10881 + ... + 16820.

It is an arithmetic number, because the mean of its divisors is an integer number (3739770).

Almost surely, 2^82271970 is an apocalyptic number.

82271970 is an abundant number, since it is smaller than the sum of its proper divisors (157073310).

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

82271970 is a wasteful number, since it uses less digits than its factorization.

82271970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27728 (or 27722 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 82271970 is about 9070.3897380432. The cubic root of 82271970 is about 434.9279309857.

The spelling of 82271970 in words is "eighty-two million, two hundred seventy-one thousand, nine hundred seventy".