82717472 has 24 divisors (see below), whose sum is σ = 163057356. Its totient is φ = 41306112.

The previous prime is 82717451. The next prime is 82717477. The reversal of 82717472 is 27471728.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64705936 + 18011536 = 8044^2 + 4244^2 .

It is not an unprimeable number, because it can be changed into a prime (82717477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40508 + ... + 42500.

Almost surely, 2^82717472 is an apocalyptic number.

It is an amenable number.

82717472 is a deficient number, since it is larger than the sum of its proper divisors (80339884).

82717472 is a wasteful number, since it uses less digits than its factorization.

82717472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300 (or 3292 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 82717472 is about 9094.9146230187. The cubic root of 82717472 is about 435.7115618826.

The spelling of 82717472 in words is "eighty-two million, seven hundred seventeen thousand, four hundred seventy-two".