82669980 has 48 divisors (see below), whose sum is σ = 245095200. Its totient is φ = 20748288.

The previous prime is 82669949. The next prime is 82669987. The reversal of 82669980 is 8996628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82669987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39505 + ... + 41544.

It is an arithmetic number, because the mean of its divisors is an integer number (5106150).

Almost surely, 2^82669980 is an apocalyptic number.

It is an amenable number.

82669980 is an abundant number, since it is smaller than the sum of its proper divisors (162425220).

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

82669980 is a wasteful number, since it uses less digits than its factorization.

82669980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81078 (or 81076 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 82669980 is about 9092.3033385386. The cubic root of 82669980 is about 435.6281584029.

The spelling of 82669980 in words is "eighty-two million, six hundred sixty-nine thousand, nine hundred eighty".