22013418 has 32 divisors (see below), whose sum is σ = 50724864. Its totient is φ = 6238512.

The previous prime is 22013413. The next prime is 22013423. The reversal of 22013418 is 81431022.

It is an interprime number because it is at equal distance from previous prime (22013413) and next prime (22013423).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22013394 and 22013403.

It is not an unprimeable number, because it can be changed into a prime (22013413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3271 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (1585152).

Almost surely, 2^22013418 is an apocalyptic number.

22013418 is an abundant number, since it is smaller than the sum of its proper divisors (28711446).

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

22013418 is a wasteful number, since it uses less digits than its factorization.

22013418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 22013418 is about 4691.8459053980. The cubic root of 22013418 is about 280.2608877967.

The spelling of 22013418 in words is "twenty-two million, thirteen thousand, four hundred eighteen".