13257244 has 108 divisors (see below), whose sum is σ = 32689272. Its totient is φ = 4656960.

The previous prime is 13257221. The next prime is 13257253. The reversal of 13257244 is 44275231.

It is a Harshad number since it is a multiple of its sum of digits (28).

Its product of digits (6720) is a multiple of the sum of its prime factors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 308287 + ... + 308329.

Almost surely, 2^13257244 is an apocalyptic number.

13257244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13257244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16344636).

13257244 is an abundant number, since it is smaller than the sum of its proper divisors (19432028).

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

13257244 is a wasteful number, since it uses less digits than its factorization.

13257244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 76 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 13257244 is about 3641.0498486014. The cubic root of 13257244 is about 236.6742901289.

The spelling of 13257244 in words is "thirteen million, two hundred fifty-seven thousand, two hundred forty-four".