14639920 has 20 divisors (see below), whose sum is σ = 34038000. Its totient is φ = 5855936.

The previous prime is 14639917. The next prime is 14639921. The reversal of 14639920 is 2993641.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14639921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 91420 + ... + 91579.

It is an arithmetic number, because the mean of its divisors is an integer number (1701900).

Almost surely, 2^14639920 is an apocalyptic number.

14639920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14639920 is an abundant number, since it is smaller than the sum of its proper divisors (19398080).

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

14639920 is a wasteful number, since it uses less digits than its factorization.

14639920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183012 (or 183006 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 14639920 is about 3826.2148397600. The cubic root of 14639920 is about 244.6317945417.

The spelling of 14639920 in words is "fourteen million, six hundred thirty-nine thousand, nine hundred twenty".