82691480 has 32 divisors (see below), whose sum is σ = 188611200. Its totient is φ = 32622336.

The previous prime is 82691459. The next prime is 82691491. The reversal of 82691480 is 8419628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11240 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (5894100).

Almost surely, 2^82691480 is an apocalyptic number.

It is an amenable number.

82691480 is an abundant number, since it is smaller than the sum of its proper divisors (105919720).

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

82691480 is a wasteful number, since it uses less digits than its factorization.

82691480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28403 (or 28399 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 82691480 is about 9093.4855803482. The cubic root of 82691480 is about 435.6659197667.

The spelling of 82691480 in words is "eighty-two million, six hundred ninety-one thousand, four hundred eighty".