13828724 has 24 divisors (see below), whose sum is σ = 29785728. Its totient is φ = 5470560.

The previous prime is 13828723. The next prime is 13828777. The reversal of 13828724 is 42782831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13828723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18632 + ... + 19359.

It is an arithmetic number, because the mean of its divisors is an integer number (1241072).

Almost surely, 2^13828724 is an apocalyptic number.

13828724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13828724 is an abundant number, since it is smaller than the sum of its proper divisors (15957004).

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

13828724 is a wasteful number, since it uses less digits than its factorization.

13828724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38015 (or 38013 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 13828724 is about 3718.6992349476. The cubic root of 13828724 is about 240.0273348495.

The spelling of 13828724 in words is "thirteen million, eight hundred twenty-eight thousand, seven hundred twenty-four".