13739570 has 32 divisors (see below), whose sum is σ = 28204848. Its totient is φ = 4773888.

The previous prime is 13739567. The next prime is 13739581. The reversal of 13739570 is 7593731.

It can be written as a sum of positive squares in 8 ways, for example, as 6932689 + 6806881 = 2633^2 + 2609^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13739570.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 899 + ... + 5318.

Almost surely, 2^13739570 is an apocalyptic number.

13739570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13739570 is an abundant number, since it is smaller than the sum of its proper divisors (14465278).

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

13739570 is a wasteful number, since it uses less digits than its factorization.

13739570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 13739570 is about 3706.6925958326. The cubic root of 13739570 is about 239.5104023678.

The spelling of 13739570 in words is "thirteen million, seven hundred thirty-nine thousand, five hundred seventy".