81874022 has 8 divisors (see below), whose sum is σ = 124290936. Its totient is φ = 40443712.

The previous prime is 81874019. The next prime is 81874031. The reversal of 81874022 is 22047818.

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

It is a self number, because there is not a number n which added to its sum of digits gives 81874022.

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, 246443 + ... + 246774.

It is an arithmetic number, because the mean of its divisors is an integer number (15536367).

Almost surely, 2^81874022 is an apocalyptic number.

81874022 is a deficient number, since it is larger than the sum of its proper divisors (42416914).

81874022 is a wasteful number, since it uses less digits than its factorization.

81874022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493302.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 81874022 is about 9048.4264930429. The cubic root of 81874022 is about 434.2255511752.

The spelling of 81874022 in words is "eighty-one million, eight hundred seventy-four thousand, twenty-two".