14947840 has 40 divisors (see below), whose sum is σ = 35845920. Its totient is φ = 5978112.

The previous prime is 14947837. The next prime is 14947841. The reversal of 14947840 is 4874941.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 14947840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14947841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360 + ... + 5479.

It is an arithmetic number, because the mean of its divisors is an integer number (896148).

Almost surely, 2^14947840 is an apocalyptic number.

14947840 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 14947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17922960).

14947840 is an abundant number, since it is smaller than the sum of its proper divisors (20898080).

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

14947840 is an frugal number, since it uses more digits than its factorization.

14947840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5862 (or 5846 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 14947840 is about 3866.2436550223. The cubic root of 14947840 is about 246.3350140646.

The spelling of 14947840 in words is "fourteen million, nine hundred forty-seven thousand, eight hundred forty".