81882604 has 6 divisors (see below), whose sum is σ = 143294564. Its totient is φ = 40941300.

The previous prime is 81882589. The next prime is 81882607. The reversal of 81882604 is 40628818.

It is not an unprimeable number, because it can be changed into a prime (81882607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10235322 + ... + 10235329.

Almost surely, 2^81882604 is an apocalyptic number.

It is an amenable number.

81882604 is a deficient number, since it is larger than the sum of its proper divisors (61411960).

81882604 is a wasteful number, since it uses less digits than its factorization.

81882604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470655 (or 20470653 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 81882604 is about 9048.9007067157. The cubic root of 81882604 is about 434.2407224240.

The spelling of 81882604 in words is "eighty-one million, eight hundred eighty-two thousand, six hundred four".