14387940 has 144 divisors (see below), whose sum is σ = 52590720. Its totient is φ = 3110400.

The previous prime is 14387939. The next prime is 14388037. The reversal of 14387940 is 4978341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 14387895 and 14387904.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 23640 + ... + 24240.

Almost surely, 2^14387940 is an apocalyptic number.

14387940 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 14387940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26295360).

14387940 is an abundant number, since it is smaller than the sum of its proper divisors (38202780).

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

14387940 is a wasteful number, since it uses less digits than its factorization.

14387940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 14387940 is about 3793.1438148322. The cubic root of 14387940 is about 243.2201429314.

The spelling of 14387940 in words is "fourteen million, three hundred eighty-seven thousand, nine hundred forty".