82974771 has 24 divisors (see below), whose sum is σ = 135261360. Its totient is φ = 48552000.

The previous prime is 82974769. The next prime is 82974781. The reversal of 82974771 is 17747928.

It is a happy number.

It is not a de Polignac number, because 82974771 - 2¹ = 82974769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82974721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11580 + ... + 17321.

It is an arithmetic number, because the mean of its divisors is an integer number (5635890).

Almost surely, 2^82974771 is an apocalyptic number.

82974771 is a deficient number, since it is larger than the sum of its proper divisors (52286589).

82974771 is a wasteful number, since it uses less digits than its factorization.

82974771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28947 (or 28944 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 82974771 is about 9109.0488526520. The cubic root of 82974771 is about 436.1628656060.

The spelling of 82974771 in words is "eighty-two million, nine hundred seventy-four thousand, seven hundred seventy-one".