81022446 has 24 divisors (see below), whose sum is σ = 175724640. Its totient is φ = 26980416.

The previous prime is 81022427. The next prime is 81022453. The reversal of 81022446 is 64422018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25291 + ... + 28313.

It is an arithmetic number, because the mean of its divisors is an integer number (7321860).

Almost surely, 2^81022446 is an apocalyptic number.

81022446 is an abundant number, since it is smaller than the sum of its proper divisors (94702194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81022446 is a wasteful number, since it uses less digits than its factorization.

81022446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520 (or 4517 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 81022446 is about 9001.2469136226. The cubic root of 81022446 is about 432.7148337392.

The spelling of 81022446 in words is "eighty-one million, twenty-two thousand, four hundred forty-six".