14887840 has 72 divisors (see below), whose sum is σ = 38710980. Its totient is φ = 5406720.

The previous prime is 14887813. The next prime is 14887841. The reversal of 14887840 is 4878841.

It can be written as a sum of positive squares in 2 ways, for example, as 14653584 + 234256 = 3828^2 + 484^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 14887793 and 14887802.

It is not an unprimeable number, because it can be changed into a prime (14887841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18976 + ... + 19744.

Almost surely, 2^14887840 is an apocalyptic number.

14887840 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 14887840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19355490).

14887840 is an abundant number, since it is smaller than the sum of its proper divisors (23823140).

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

14887840 is a wasteful number, since it uses less digits than its factorization.

14887840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 14887840 is about 3858.4763832373. The cubic root of 14887840 is about 246.0049792986.

The spelling of 14887840 in words is "fourteen million, eight hundred eighty-seven thousand, eight hundred forty".