18072022 has 8 divisors (see below), whose sum is σ = 27126072. Its totient is φ = 9030000.

The previous prime is 18072011. The next prime is 18072023. The reversal of 18072022 is 22027081.

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

It is a junction number, because it is equal to n+sod(n) for n = 18071984 and 18072002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18072023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4497 + ... + 7507.

It is an arithmetic number, because the mean of its divisors is an integer number (3390759).

Almost surely, 2^18072022 is an apocalyptic number.

18072022 is a deficient number, since it is larger than the sum of its proper divisors (9054050).

18072022 is a wasteful number, since it uses less digits than its factorization.

18072022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 18072022 is about 4251.1200876945. The cubic root of 18072022 is about 262.4232132169.

The spelling of 18072022 in words is "eighteen million, seventy-two thousand, twenty-two".