81246896 has 10 divisors (see below), whose sum is σ = 157415892. Its totient is φ = 40623440.

The previous prime is 81246889. The next prime is 81246899. The reversal of 81246896 is 69864218.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (81246899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2538950 + ... + 2538981.

Almost surely, 2^81246896 is an apocalyptic number.

It is an amenable number.

81246896 is a deficient number, since it is larger than the sum of its proper divisors (76168996).

81246896 is a wasteful number, since it uses less digits than its factorization.

81246896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077939 (or 5077933 counting only the distinct ones).

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

The square root of 81246896 is about 9013.7060080746. The cubic root of 81246896 is about 433.1140371004.

The spelling of 81246896 in words is "eighty-one million, two hundred forty-six thousand, eight hundred ninety-six".