14191440 has 80 divisors (see below), whose sum is σ = 45532800. Its totient is φ = 3652096.

The previous prime is 14191427. The next prime is 14191477. The reversal of 14191440 is 4419141.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 14191440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5941 + ... + 7979.

It is an arithmetic number, because the mean of its divisors is an integer number (569160).

Almost surely, 2^14191440 is an apocalyptic number.

14191440 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 14191440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22766400).

14191440 is an abundant number, since it is smaller than the sum of its proper divisors (31341360).

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

14191440 is a wasteful number, since it uses less digits than its factorization.

14191440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 14191440 is about 3767.1527709930. The cubic root of 14191440 is about 242.1078225445.

The spelling of 14191440 in words is "fourteen million, one hundred ninety-one thousand, four hundred forty".