14040020 has 24 divisors (see below), whose sum is σ = 30282504. Its totient is φ = 5463936.

The previous prime is 14040001. The next prime is 14040023. The reversal of 14040020 is 2004041.

It can be written as a sum of positive squares in 4 ways, for example, as 2937796 + 11102224 = 1714^2 + 3332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 14039983 and 14040010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14040023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8747 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (1261771).

Almost surely, 2^14040020 is an apocalyptic number.

14040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14040020 is an abundant number, since it is smaller than the sum of its proper divisors (16242484).

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

14040020 is a wasteful number, since it uses less digits than its factorization.

14040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19019 (or 19017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 14040020 is about 3747.0014678407. The cubic root of 14040020 is about 241.2436600659.

Subtracting from 14040020 its sum of digits (11), we obtain a square (14040009 = 3747²).

Adding to 14040020 its reverse (2004041), we get a palindrome (16044061).

The spelling of 14040020 in words is "fourteen million, forty thousand, twenty".