82691500 has 24 divisors (see below), whose sum is σ = 180599328. Its totient is φ = 33076400.

The previous prime is 82691491. The next prime is 82691507. The reversal of 82691500 is 519628.

It is not an unprimeable number, because it can be changed into a prime (82691507) 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, 82192 + ... + 83191.

It is an arithmetic number, because the mean of its divisors is an integer number (7524972).

Almost surely, 2^82691500 is an apocalyptic number.

It is an amenable number.

82691500 is an abundant number, since it is smaller than the sum of its proper divisors (97907828).

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

82691500 is a wasteful number, since it uses less digits than its factorization.

82691500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165402 (or 165390 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 82691500 is about 9093.4866800364. The cubic root of 82691500 is about 435.6659548905.

The spelling of 82691500 in words is "eighty-two million, six hundred ninety-one thousand, five hundred".