14390020 has 24 divisors (see below), whose sum is σ = 30298968. Its totient is φ = 5740800.

The previous prime is 14390009. The next prime is 14390023. The reversal of 14390020 is 2009341.

It can be written as a sum of positive squares in 4 ways, for example, as 506944 + 13883076 = 712^2 + 3726^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 14390020.

It is not an unprimeable number, because it can be changed into a prime (14390023) 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 7 ways as a sum of consecutive naturals, for example, 9730 + ... + 11110.

It is an arithmetic number, because the mean of its divisors is an integer number (1262457).

Almost surely, 2^14390020 is an apocalyptic number.

14390020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14390020 is an abundant number, since it is smaller than the sum of its proper divisors (15908948).

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

14390020 is a wasteful number, since it uses less digits than its factorization.

14390020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 14390020 is about 3793.4179838241. The cubic root of 14390020 is about 243.2318627820.

Adding to 14390020 its reverse (2009341), we get a palindrome (16399361).

The spelling of 14390020 in words is "fourteen million, three hundred ninety thousand, twenty".