82269780 has 96 divisors (see below), whose sum is σ = 240807168. Its totient is φ = 20966400.

The previous prime is 82269773. The next prime is 82269841. The reversal of 82269780 is 8796228.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130065 + ... + 130695.

It is an arithmetic number, because the mean of its divisors is an integer number (2508408).

Almost surely, 2^82269780 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 82269780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120403584).

82269780 is an abundant number, since it is smaller than the sum of its proper divisors (158537388).

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

82269780 is a wasteful number, since it uses less digits than its factorization.

82269780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 82269780 is about 9070.2690147536. The cubic root of 82269780 is about 434.9240718316.

The spelling of 82269780 in words is "eighty-two million, two hundred sixty-nine thousand, seven hundred eighty".