14399240 has 16 divisors (see below), whose sum is σ = 32398380. Its totient is φ = 5759680.

The previous prime is 14399239. The next prime is 14399243. The reversal of 14399240 is 4299341.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14122564 + 276676 = 3758^2 + 526^2 .

It is a super-2 number, since 2×14399240² = 414676225155200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14399197 and 14399206.

It is not an unprimeable number, because it can be changed into a prime (14399243) 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 3 ways as a sum of consecutive naturals, for example, 179951 + ... + 180030.

Almost surely, 2^14399240 is an apocalyptic number.

14399240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14399240 is an abundant number, since it is smaller than the sum of its proper divisors (17999140).

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

14399240 is a wasteful number, since it uses less digits than its factorization.

14399240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359992 (or 359988 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 14399240 is about 3794.6330520882. The cubic root of 14399240 is about 243.2837996796.

The spelling of 14399240 in words is "fourteen million, three hundred ninety-nine thousand, two hundred forty".