13261570 has 32 divisors (see below), whose sum is σ = 28470528. Its totient is φ = 4348608.

The previous prime is 13261553. The next prime is 13261571. The reversal of 13261570 is 7516231.

It is not an unprimeable number, because it can be changed into a prime (13261571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509 + ... + 5728.

It is an arithmetic number, because the mean of its divisors is an integer number (889704).

Almost surely, 2^13261570 is an apocalyptic number.

13261570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13261570 is an abundant number, since it is smaller than the sum of its proper divisors (15208958).

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

13261570 is a wasteful number, since it uses less digits than its factorization.

13261570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8274.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 13261570 is about 3641.6438595777. The cubic root of 13261570 is about 236.7000305627.

It can be divided in two parts, 13261 and 570, that added together give a palindrome (13831).

The spelling of 13261570 in words is "thirteen million, two hundred sixty-one thousand, five hundred seventy".