13938570 has 24 divisors (see below), whose sum is σ = 36240516. Its totient is φ = 3716928.

The previous prime is 13938559. The next prime is 13938577. The reversal of 13938570 is 7583931.

It can be written as a sum of positive squares in 2 ways, for example, as 13860729 + 77841 = 3723^2 + 279^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13938577) 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 11 ways as a sum of consecutive naturals, for example, 77347 + ... + 77526.

Almost surely, 2^13938570 is an apocalyptic number.

13938570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13938570 is an abundant number, since it is smaller than the sum of its proper divisors (22301946).

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

13938570 is a wasteful number, since it uses less digits than its factorization.

13938570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154886 (or 154883 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13938570 is about 3733.4394330162. The cubic root of 13938570 is about 240.6611975679.

The spelling of 13938570 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred seventy".