22420118 has 16 divisors (see below), whose sum is σ = 39087360. Its totient is φ = 9445416.

The previous prime is 22420117. The next prime is 22420129. The reversal of 22420118 is 81102422.

It is a happy number.

It is a super-2 number, since 2×22420118² = 1005323382267848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22420118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12746 + ... + 14397.

It is an arithmetic number, because the mean of its divisors is an integer number (2442960).

Almost surely, 2^22420118 is an apocalyptic number.

22420118 is a deficient number, since it is larger than the sum of its proper divisors (16667242).

22420118 is a wasteful number, since it uses less digits than its factorization.

22420118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27211.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22420118 is about 4734.9887011481. The cubic root of 22420118 is about 281.9763154328.

The spelling of 22420118 in words is "twenty-two million, four hundred twenty thousand, one hundred eighteen".