22032018 has 24 divisors (see below), whose sum is σ = 48314448. Its totient is φ = 7255032.

The previous prime is 22032013. The next prime is 22032019. The reversal of 22032018 is 81023022.

It is a happy number.

It is a super-3 number, since 3×22032018³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22032011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5880 + ... + 8867.

It is an arithmetic number, because the mean of its divisors is an integer number (2013102).

Almost surely, 2^22032018 is an apocalyptic number.

22032018 is an abundant number, since it is smaller than the sum of its proper divisors (26282430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22032018 is a wasteful number, since it uses less digits than its factorization.

22032018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838 (or 14835 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22032018 is about 4693.8276491580. The cubic root of 22032018 is about 280.3398000465.

The spelling of 22032018 in words is "twenty-two million, thirty-two thousand, eighteen".