13263156 has 48 divisors (see below), whose sum is σ = 34601280. Its totient is φ = 4393440.

The previous prime is 13263143. The next prime is 13263167. The reversal of 13263156 is 65136231.

It is a super-2 number, since 2×13263156² = 351822614160672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24246 + ... + 24786.

It is an arithmetic number, because the mean of its divisors is an integer number (720860).

Almost surely, 2^13263156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13263156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17300640).

13263156 is an abundant number, since it is smaller than the sum of its proper divisors (21338124).

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

13263156 is a wasteful number, since it uses less digits than its factorization.

13263156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 773 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 13263156 is about 3641.8616118683. The cubic root of 13263156 is about 236.7094661294.

Adding to 13263156 its reverse (65136231), we get a palindrome (78399387).

It can be divided in two parts, 13 and 263156, that added together give a square (263169 = 513²).

The spelling of 13263156 in words is "thirteen million, two hundred sixty-three thousand, one hundred fifty-six".