13909752 has 64 divisors (see below), whose sum is σ = 39225600. Its totient is φ = 4566240.

The previous prime is 13909751. The next prime is 13909771. The reversal of 13909752 is 25790931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14883 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (612900).

Almost surely, 2^13909752 is an apocalyptic number.

13909752 is a gapful number since it is divisible by the number (12) 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 13909752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19612800).

13909752 is an abundant number, since it is smaller than the sum of its proper divisors (25315848).

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

13909752 is a wasteful number, since it uses less digits than its factorization.

13909752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 13909752 is about 3729.5779922131. The cubic root of 13909752 is about 240.4952274213.

The spelling of 13909752 in words is "thirteen million, nine hundred nine thousand, seven hundred fifty-two".