13261738 has 16 divisors (see below), whose sum is σ = 23468544. Its totient is φ = 5500080.

The previous prime is 13261733. The next prime is 13261739. The reversal of 13261738 is 83716231.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (13261733) 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 7 ways as a sum of consecutive naturals, for example, 14845 + ... + 15712.

It is an arithmetic number, because the mean of its divisors is an integer number (1466784).

Almost surely, 2^13261738 is an apocalyptic number.

13261738 is a deficient number, since it is larger than the sum of its proper divisors (10206806).

13261738 is a wasteful number, since it uses less digits than its factorization.

13261738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30597.

The product of its digits is 6048, while the sum is 31.

The square root of 13261738 is about 3641.6669260107. Note that the first 3 decimals coincide. The cubic root of 13261738 is about 236.7010300783.

Adding to 13261738 its reverse (83716231), we get a palindrome (96977969).

The spelling of 13261738 in words is "thirteen million, two hundred sixty-one thousand, seven hundred thirty-eight".