82472985 has 48 divisors (see below), whose sum is σ = 169443456. Its totient is φ = 37698048.

The previous prime is 82472981. The next prime is 82472987. The reversal of 82472985 is 58927428.

It is not a de Polignac number, because 82472985 - 2² = 82472981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 82472985.

It is not an unprimeable number, because it can be changed into a prime (82472981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3657 + ... + 13353.

It is an arithmetic number, because the mean of its divisors is an integer number (3530072).

Almost surely, 2^82472985 is an apocalyptic number.

It is an amenable number.

82472985 is an abundant number, since it is smaller than the sum of its proper divisors (86970471).

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

82472985 is an equidigital number, since it uses as much as digits as its factorization.

82472985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9724 (or 9712 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 82472985 is about 9081.4638137252. The cubic root of 82472985 is about 435.2818625093.

The spelling of 82472985 in words is "eighty-two million, four hundred seventy-two thousand, nine hundred eighty-five".