82985772 has 36 divisors (see below), whose sum is σ = 205702280. Its totient is φ = 26033664.

The previous prime is 82985753. The next prime is 82985779. The reversal of 82985772 is 27758928.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (82985779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8497 + ... + 15432.

Almost surely, 2^82985772 is an apocalyptic number.

It is an amenable number.

82985772 is an abundant number, since it is smaller than the sum of its proper divisors (122716508).

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

82985772 is a wasteful number, since it uses less digits than its factorization.

82985772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970 (or 23951 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 82985772 is about 9109.6526827317. The cubic root of 82985772 is about 436.1821406040.

The spelling of 82985772 in words is "eighty-two million, nine hundred eighty-five thousand, seven hundred seventy-two".