18052407 has 12 divisors (see below), whose sum is σ = 26518440. Its totient is φ = 11830608.

The previous prime is 18052403. The next prime is 18052421. The reversal of 18052407 is 70425081.

It is not a de Polignac number, because 18052407 - 2² = 18052403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18052403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16468 + ... + 17529.

It is an arithmetic number, because the mean of its divisors is an integer number (2209870).

Almost surely, 2^18052407 is an apocalyptic number.

18052407 is a deficient number, since it is larger than the sum of its proper divisors (8466033).

18052407 is a wasteful number, since it uses less digits than its factorization.

18052407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34062 (or 34059 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18052407 is about 4248.8124223129. The cubic root of 18052407 is about 262.3282359319.

Adding to 18052407 its reverse (70425081), we get a palindrome (88477488).

The spelling of 18052407 in words is "eighteen million, fifty-two thousand, four hundred seven".