81496826 has 8 divisors (see below), whose sum is σ = 122374560. Its totient is φ = 40705308.

The previous prime is 81496823. The next prime is 81496837. The reversal of 81496826 is 62869418.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81496823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19136 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (15296820).

Almost surely, 2^81496826 is an apocalyptic number.

81496826 is a deficient number, since it is larger than the sum of its proper divisors (40877734).

81496826 is a wasteful number, since it uses less digits than its factorization.

81496826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43108.

The product of its digits is 165888, while the sum is 44.

The square root of 81496826 is about 9027.5592493209. The cubic root of 81496826 is about 433.5576945978.

The spelling of 81496826 in words is "eighty-one million, four hundred ninety-six thousand, eight hundred twenty-six".