18230722 has 8 divisors (see below), whose sum is σ = 27510336. Its totient is φ = 9060612.

The previous prime is 18230717. The next prime is 18230761. The reversal of 18230722 is 22703281.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26958 + ... + 27625.

It is an arithmetic number, because the mean of its divisors is an integer number (3438792).

Almost surely, 2^18230722 is an apocalyptic number.

18230722 is a deficient number, since it is larger than the sum of its proper divisors (9279614).

18230722 is a wasteful number, since it uses less digits than its factorization.

18230722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54752.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 18230722 is about 4269.7449572545. The cubic root of 18230722 is about 263.1891346759.

It can be divided in two parts, 182307 and 22, that added together give a square (182329 = 427²).

The spelling of 18230722 in words is "eighteen million, two hundred thirty thousand, seven hundred twenty-two".