14400420 has 24 divisors (see below), whose sum is σ = 40321344. Its totient is φ = 3840096.

The previous prime is 14400413. The next prime is 14400431. The reversal of 14400420 is 2400441.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 14400420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119944 + ... + 120063.

It is an arithmetic number, because the mean of its divisors is an integer number (1680056).

Almost surely, 2^14400420 is an apocalyptic number.

14400420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14400420 is an abundant number, since it is smaller than the sum of its proper divisors (25920924).

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

14400420 is a wasteful number, since it uses less digits than its factorization.

14400420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240019 (or 240017 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 14400420 is about 3794.7885316576. The cubic root of 14400420 is about 243.2904451007.

Adding to 14400420 its reverse (2400441), we get a palindrome (16800861).

The spelling of 14400420 in words is "fourteen million, four hundred thousand, four hundred twenty".