18269404 has 12 divisors (see below), whose sum is σ = 32092200. Its totient is φ = 9100208.

The previous prime is 18269401. The next prime is 18269443. The reversal of 18269404 is 40496281.

It is a super-2 number, since 2×18269404² = 667542245030432, 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 18269404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18269401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7414 + ... + 9565.

It is an arithmetic number, because the mean of its divisors is an integer number (2674350).

Almost surely, 2^18269404 is an apocalyptic number.

It is an amenable number.

18269404 is a deficient number, since it is larger than the sum of its proper divisors (13822796).

18269404 is a wasteful number, since it uses less digits than its factorization.

18269404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17252 (or 17250 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18269404 is about 4274.2723357315. The cubic root of 18269404 is about 263.3751483385.

The spelling of 18269404 in words is "eighteen million, two hundred sixty-nine thousand, four hundred four".