13940420 has 24 divisors (see below), whose sum is σ = 31527384. Its totient is φ = 5147136.

The previous prime is 13940413. The next prime is 13940429. The reversal of 13940420 is 2404931.

13940420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2637376 + 11303044 = 1624^2 + 3362^2 .

It is not an unprimeable number, because it can be changed into a prime (13940429) 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, 26549 + ... + 27068.

It is an arithmetic number, because the mean of its divisors is an integer number (1313641).

Almost surely, 2^13940420 is an apocalyptic number.

13940420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13940420 is an abundant number, since it is smaller than the sum of its proper divisors (17586964).

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

13940420 is a wasteful number, since it uses less digits than its factorization.

13940420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53639 (or 53637 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13940420 is about 3733.6871856116. The cubic root of 13940420 is about 240.6718443683.

The spelling of 13940420 in words is "thirteen million, nine hundred forty thousand, four hundred twenty".