81026246 has 16 divisors (see below), whose sum is σ = 139134240. Its totient is φ = 34667520.

The previous prime is 81026237. The next prime is 81026269. The reversal of 81026246 is 64262018.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4460 + ... + 13488.

It is an arithmetic number, because the mean of its divisors is an integer number (8695890).

Almost surely, 2^81026246 is an apocalyptic number.

81026246 is a deficient number, since it is larger than the sum of its proper divisors (58107994).

81026246 is a wasteful number, since it uses less digits than its factorization.

81026246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 81026246 is about 9001.4579930142. The cubic root of 81026246 is about 432.7215984928.

The spelling of 81026246 in words is "eighty-one million, twenty-six thousand, two hundred forty-six".