18496222 has 4 divisors (see below), whose sum is σ = 27744336. Its totient is φ = 9248110.

The previous prime is 18496217. The next prime is 18496223. The reversal of 18496222 is 22269481.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18496222² = 684220456546568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18496223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4624054 + ... + 4624057.

It is an arithmetic number, because the mean of its divisors is an integer number (6936084).

Almost surely, 2^18496222 is an apocalyptic number.

18496222 is a deficient number, since it is larger than the sum of its proper divisors (9248114).

18496222 is an equidigital number, since it uses as much as digits as its factorization.

18496222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248113.

The product of its digits is 13824, while the sum is 34.

The square root of 18496222 is about 4300.7234275177. The cubic root of 18496222 is about 264.4606188011.

The spelling of 18496222 in words is "eighteen million, four hundred ninety-six thousand, two hundred twenty-two".