22303018 has 4 divisors (see below), whose sum is σ = 33454530. Its totient is φ = 11151508.

The previous prime is 22303007. The next prime is 22303019. The reversal of 22303018 is 81030322.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 14311089 + 7991929 = 3783^2 + 2827^2 .

It is a super-2 number, since 2×22303018² = 994849223816648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22302986 and 22303004.

It is not an unprimeable number, because it can be changed into a prime (22303019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5575753 + ... + 5575756.

Almost surely, 2^22303018 is an apocalyptic number.

22303018 is a deficient number, since it is larger than the sum of its proper divisors (11151512).

22303018 is a wasteful number, since it uses less digits than its factorization.

22303018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151511.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22303018 is about 4722.6071189545. The cubic root of 22303018 is about 281.4845386484.

The spelling of 22303018 in words is "twenty-two million, three hundred three thousand, eighteen".