14257818 has 12 divisors (see below), whose sum is σ = 30891978. Its totient is φ = 4752600.

The previous prime is 14257813. The next prime is 14257819. The reversal of 14257818 is 81875241.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 7112889 = 2673^2 + 2667^2 .

It is a super-2 number, since 2×14257818² = 406570748242248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14257813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396033 + ... + 396068.

Almost surely, 2^14257818 is an apocalyptic number.

14257818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

14257818 is an abundant number, since it is smaller than the sum of its proper divisors (16634160).

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

14257818 is a wasteful number, since it uses less digits than its factorization.

14257818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792109 (or 792106 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 14257818 is about 3775.9525950414. The cubic root of 14257818 is about 242.4847080023.

It can be divided in two parts, 142578 and 18, that multiplied together give a square (2566404 = 1602²).

The spelling of 14257818 in words is "fourteen million, two hundred fifty-seven thousand, eight hundred eighteen".