81763022 has 32 divisors (see below), whose sum is σ = 140313600. Its totient is φ = 35370720.

The previous prime is 81762959. The next prime is 81763037. The reversal of 81763022 is 22036718.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176363 + ... + 176825.

It is an arithmetic number, because the mean of its divisors is an integer number (4384800).

Almost surely, 2^81763022 is an apocalyptic number.

81763022 is a deficient number, since it is larger than the sum of its proper divisors (58550578).

81763022 is a wasteful number, since it uses less digits than its factorization.

81763022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 81763022 is about 9042.2907495833. The cubic root of 81763022 is about 434.0292299114.

The spelling of 81763022 in words is "eighty-one million, seven hundred sixty-three thousand, twenty-two".