82819740 has 24 divisors (see below), whose sum is σ = 231895440. Its totient is φ = 22085248.

The previous prime is 82819721. The next prime is 82819753. The reversal of 82819740 is 4791828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690105 + ... + 690224.

It is an arithmetic number, because the mean of its divisors is an integer number (9662310).

Almost surely, 2^82819740 is an apocalyptic number.

It is an amenable number.

82819740 is an abundant number, since it is smaller than the sum of its proper divisors (149075700).

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

82819740 is a wasteful number, since it uses less digits than its factorization.

82819740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380341 (or 1380339 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 82819740 is about 9100.5351490997. The cubic root of 82819740 is about 435.8910523733.

The spelling of 82819740 in words is "eighty-two million, eight hundred nineteen thousand, seven hundred forty".