14021440 has 56 divisors (see below), whose sum is σ = 34198560. Its totient is φ = 5472768.

The previous prime is 14021437. The next prime is 14021453. The reversal of 14021440 is 4412041.

14021440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 13251 + ... + 14269.

Almost surely, 2^14021440 is an apocalyptic number.

14021440 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 14021440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17099280).

14021440 is an abundant number, since it is smaller than the sum of its proper divisors (20177120).

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

14021440 is a wasteful number, since it uses less digits than its factorization.

14021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 14021440 is about 3744.5213312251. The cubic root of 14021440 is about 241.1371956901.

Adding to 14021440 its reverse (4412041), we get a palindrome (18433481).

The spelling of 14021440 in words is "fourteen million, twenty-one thousand, four hundred forty".