14397440 has 104 divisors (see below), whose sum is σ = 37350960. Its totient is φ = 5308416.

The previous prime is 14397391. The next prime is 14397457. The reversal of 14397440 is 4479341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 14397397 and 14397406.

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, 389102 + ... + 389138.

Almost surely, 2^14397440 is an apocalyptic number.

14397440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14397440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18675480).

14397440 is an abundant number, since it is smaller than the sum of its proper divisors (22953520).

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

14397440 is an equidigital number, since it uses as much as digits as its factorization.

14397440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 14397440 is about 3794.3958675921. The cubic root of 14397440 is about 243.2736618971.

The spelling of 14397440 in words is "fourteen million, three hundred ninety-seven thousand, four hundred forty".