13263778 has 24 divisors (see below), whose sum is σ = 22829184. Its totient is φ = 5764440.

The previous prime is 13263773. The next prime is 13263781. The reversal of 13263778 is 87736231.

It is not an unprimeable number, because it can be changed into a prime (13263773) 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 11 ways as a sum of consecutive naturals, for example, 4375 + ... + 6757.

It is an arithmetic number, because the mean of its divisors is an integer number (951216).

Almost surely, 2^13263778 is an apocalyptic number.

13263778 is a deficient number, since it is larger than the sum of its proper divisors (9565406).

13263778 is a wasteful number, since it uses less digits than its factorization.

13263778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2419 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 13263778 is about 3641.9470067534. The cubic root of 13263778 is about 236.7131663796.

It can be divided in two parts, 13263 and 778, that added together give a palindrome (14041).

The spelling of 13263778 in words is "thirteen million, two hundred sixty-three thousand, seven hundred seventy-eight".