18407022 has 32 divisors (see below), whose sum is σ = 39349152. Its totient is φ = 5720064.

The previous prime is 18407009. The next prime is 18407041. The reversal of 18407022 is 22070481.

Added to its reverse (22070481) it gives a triangular number (40477503 = T₈₉₉₇).

It is a junction number, because it is equal to n+sod(n) for n = 18406983 and 18407001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10728 + ... + 12324.

It is an arithmetic number, because the mean of its divisors is an integer number (1229661).

Almost surely, 2^18407022 is an apocalyptic number.

18407022 is an abundant number, since it is smaller than the sum of its proper divisors (20942130).

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

18407022 is a wasteful number, since it uses less digits than its factorization.

18407022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 18407022 is about 4290.3405459241. The cubic root of 18407022 is about 264.0348037219.

Adding to 18407022 its reverse (22070481), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 18407022 in words is "eighteen million, four hundred seven thousand, twenty-two".