14500640 has 144 divisors (see below), whose sum is σ = 43436736. Its totient is φ = 4477440.

The previous prime is 14500631. The next prime is 14500657. The reversal of 14500640 is 4600541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135467 + ... + 135573.

It is an arithmetic number, because the mean of its divisors is an integer number (301644).

Almost surely, 2^14500640 is an apocalyptic number.

14500640 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 14500640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21718368).

14500640 is an abundant number, since it is smaller than the sum of its proper divisors (28936096).

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

14500640 is a wasteful number, since it uses less digits than its factorization.

14500640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 14500640 is about 3807.9705881217. The cubic root of 14500640 is about 243.8535356783.

Subtracting from 14500640 its reverse (4600541), we obtain a palindrome (9900099).

The spelling of 14500640 in words is "fourteen million, five hundred thousand, six hundred forty".