13309952 has 48 divisors (see below), whose sum is σ = 27289080. Its totient is φ = 6488064.

The previous prime is 13309951. The next prime is 13309957. The reversal of 13309952 is 25990331.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137168 + ... + 137264.

Almost surely, 2^13309952 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 13309952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13644540).

13309952 is an abundant number, since it is smaller than the sum of its proper divisors (13979128).

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

13309952 is an frugal number, since it uses more digits than its factorization.

13309952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 13309952 is about 3648.2806909557. The cubic root of 13309952 is about 236.9875310192.

The spelling of 13309952 in words is "thirteen million, three hundred nine thousand, nine hundred fifty-two".