18252039 has 8 divisors (see below), whose sum is σ = 26208112. Its totient is φ = 11232000.

The previous prime is 18252029. The next prime is 18252061. The reversal of 18252039 is 93025281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18252039 - 2⁴ = 18252023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18251997 and 18252015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233962 + ... + 234039.

It is an arithmetic number, because the mean of its divisors is an integer number (3276014).

Almost surely, 2^18252039 is an apocalyptic number.

18252039 is a deficient number, since it is larger than the sum of its proper divisors (7956073).

18252039 is a wasteful number, since it uses less digits than its factorization.

18252039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468017.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 18252039 is about 4272.2405128925. The cubic root of 18252039 is about 263.2916761893.

The spelling of 18252039 in words is "eighteen million, two hundred fifty-two thousand, thirty-nine".