16138724 has 24 divisors (see below), whose sum is σ = 33320448. Its totient is φ = 6693120.

The previous prime is 16138721. The next prime is 16138739. The reversal of 16138724 is 42783161.

16138724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16138721) 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, 8429 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (1388352).

Almost surely, 2^16138724 is an apocalyptic number.

16138724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16138724 is an abundant number, since it is smaller than the sum of its proper divisors (17181724).

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

16138724 is a wasteful number, since it uses less digits than its factorization.

16138724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18635 (or 18633 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 16138724 is about 4017.3030754475. The cubic root of 16138724 is about 252.7103707056.

The spelling of 16138724 in words is "sixteen million, one hundred thirty-eight thousand, seven hundred twenty-four".