13252278 has 64 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 3810048.

The previous prime is 13252273. The next prime is 13252303. The reversal of 13252278 is 87225231.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252273) 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 31 ways as a sum of consecutive naturals, for example, 148858 + ... + 148946.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 2^13252278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13252278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15240960).

13252278 is an abundant number, since it is smaller than the sum of its proper divisors (17229642).

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

13252278 is a wasteful number, since it uses less digits than its factorization.

13252278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213.

The product of its digits is 6720, while the sum is 30.

The square root of 13252278 is about 3640.3678385570. The cubic root of 13252278 is about 236.6447346821.

It can be divided in two parts, 13252 and 278, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 13252278 in words is "thirteen million, two hundred fifty-two thousand, two hundred seventy-eight".