81932626 has 8 divisors (see below), whose sum is σ = 122938380. Its totient is φ = 40953168.

The previous prime is 81932623. The next prime is 81932629. The reversal of 81932626 is 62623918.

It is an interprime number because it is at equal distance from previous prime (81932623) and next prime (81932629).

It can be written as a sum of positive squares in 2 ways, for example, as 81631225 + 301401 = 9035^2 + 549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (81932621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6120 + ... + 14188.

Almost surely, 2^81932626 is an apocalyptic number.

81932626 is a deficient number, since it is larger than the sum of its proper divisors (41005754).

81932626 is a wasteful number, since it uses less digits than its factorization.

81932626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13148.

The product of its digits is 31104, while the sum is 37.

The square root of 81932626 is about 9051.6642668628. The cubic root of 81932626 is about 434.3291301631.

The spelling of 81932626 in words is "eighty-one million, nine hundred thirty-two thousand, six hundred twenty-six".