82897884 has 48 divisors (see below), whose sum is σ = 216333600. Its totient is φ = 27451008.

The previous prime is 82897861. The next prime is 82897897. The reversal of 82897884 is 48879828.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 82897884.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14512 + ... + 19400.

It is an arithmetic number, because the mean of its divisors is an integer number (4506950).

Almost surely, 2^82897884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82897884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108166800).

82897884 is an abundant number, since it is smaller than the sum of its proper divisors (133435716).

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

82897884 is a wasteful number, since it uses less digits than its factorization.

82897884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059 (or 5051 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 82897884 is about 9104.8275107220. The cubic root of 82897884 is about 436.0281032863.

The spelling of 82897884 in words is "eighty-two million, eight hundred ninety-seven thousand, eight hundred eighty-four".