81039022 has 8 divisors (see below), whose sum is σ = 125479872. Its totient is φ = 39212400.

The previous prime is 81039019. The next prime is 81039041. The reversal of 81039022 is 22093018.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653479 + ... + 653602.

It is an arithmetic number, because the mean of its divisors is an integer number (15684984).

Almost surely, 2^81039022 is an apocalyptic number.

81039022 is a deficient number, since it is larger than the sum of its proper divisors (44440850).

81039022 is a wasteful number, since it uses less digits than its factorization.

81039022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307114.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 81039022 is about 9002.1676278550. The cubic root of 81039022 is about 432.7443407559.

The spelling of 81039022 in words is "eighty-one million, thirty-nine thousand, twenty-two".