82775800 has 24 divisors (see below), whose sum is σ = 192454200. Its totient is φ = 33110240.

The previous prime is 82775783. The next prime is 82775807. The reversal of 82775800 is 857728.

It is a self number, because there is not a number n which added to its sum of digits gives 82775800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82775807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206740 + ... + 207139.

It is an arithmetic number, because the mean of its divisors is an integer number (8018925).

Almost surely, 2^82775800 is an apocalyptic number.

It is an amenable number.

82775800 is an abundant number, since it is smaller than the sum of its proper divisors (109678400).

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

82775800 is a wasteful number, since it uses less digits than its factorization.

82775800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413895 (or 413886 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 82775800 is about 9098.1206850646. The cubic root of 82775800 is about 435.8139514267.

The spelling of 82775800 in words is "eighty-two million, seven hundred seventy-five thousand, eight hundred".