18245408 has 24 divisors (see below), whose sum is σ = 37161180. Its totient is φ = 8807680.

The previous prime is 18245407. The next prime is 18245411. The reversal of 18245408 is 80454281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18215824 + 29584 = 4268^2 + 172^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (18245407) 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, 8903 + ... + 10758.

Almost surely, 2^18245408 is an apocalyptic number.

It is an amenable number.

18245408 is an abundant number, since it is smaller than the sum of its proper divisors (18915772).

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

18245408 is a wasteful number, since it uses less digits than its factorization.

18245408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19700 (or 19692 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 18245408 is about 4271.4643858986. The cubic root of 18245408 is about 263.2597875407.

Adding to 18245408 its reverse (80454281), we get a palindrome (98699689).

The spelling of 18245408 in words is "eighteen million, two hundred forty-five thousand, four hundred eight".