82820494 has 16 divisors (see below), whose sum is σ = 127456560. Its totient is φ = 40340160.

The previous prime is 82820453. The next prime is 82820497. The reversal of 82820494 is 49402828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82820497) 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, 38602 + ... + 40690.

It is an arithmetic number, because the mean of its divisors is an integer number (7966035).

Almost surely, 2^82820494 is an apocalyptic number.

82820494 is a deficient number, since it is larger than the sum of its proper divisors (44636066).

82820494 is a wasteful number, since it uses less digits than its factorization.

82820494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 82820494 is about 9100.5765751407. The cubic root of 82820494 is about 435.8923751693.

The spelling of 82820494 in words is "eighty-two million, eight hundred twenty thousand, four hundred ninety-four".