82819776 has 56 divisors (see below), whose sum is σ = 235990384. Its totient is φ = 25482240.

The previous prime is 82819769. The next prime is 82819777. The reversal of 82819776 is 67791828.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (82819777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14095 + ... + 19086.

It is an arithmetic number, because the mean of its divisors is an integer number (4214114).

Almost surely, 2^82819776 is an apocalyptic number.

It is an amenable number.

82819776 is an abundant number, since it is smaller than the sum of its proper divisors (153170608).

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

82819776 is a wasteful number, since it uses less digits than its factorization.

82819776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33209 (or 33199 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 82819776 is about 9100.5371270052. The cubic root of 82819776 is about 435.8911155309.

The spelling of 82819776 in words is "eighty-two million, eight hundred nineteen thousand, seven hundred seventy-six".