13138570 has 8 divisors (see below), whose sum is σ = 23649444. Its totient is φ = 5255424.

The previous prime is 13138561. The next prime is 13138571. The reversal of 13138570 is 7583131.

It can be written as a sum of positive squares in 2 ways, for example, as 12595401 + 543169 = 3549^2 + 737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13138571) 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 3 ways as a sum of consecutive naturals, for example, 656919 + ... + 656938.

Almost surely, 2^13138570 is an apocalyptic number.

13138570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138570 is a deficient number, since it is larger than the sum of its proper divisors (10510874).

13138570 is a wasteful number, since it uses less digits than its factorization.

13138570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313864.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13138570 is about 3624.7165406415. The cubic root of 13138570 is about 235.9659651196.

The spelling of 13138570 in words is "thirteen million, one hundred thirty-eight thousand, five hundred seventy".