82920786 has 16 divisors (see below), whose sum is σ = 178598784. Its totient is φ = 25514064.

The previous prime is 82920767. The next prime is 82920787. The reversal of 82920786 is 68702928.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82920787) 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, 531466 + ... + 531621.

It is an arithmetic number, because the mean of its divisors is an integer number (11162424).

Almost surely, 2^82920786 is an apocalyptic number.

82920786 is an abundant number, since it is smaller than the sum of its proper divisors (95677998).

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

82920786 is a wasteful number, since it uses less digits than its factorization.

82920786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063105.

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

The square root of 82920786 is about 9106.0851083218. The cubic root of 82920786 is about 436.0682530693.

The spelling of 82920786 in words is "eighty-two million, nine hundred twenty thousand, seven hundred eighty-six".