16239240 has 96 divisors (see below), whose sum is σ = 53539200. Its totient is φ = 4268160.

The previous prime is 16239229. The next prime is 16239241. The reversal of 16239240 is 4293261.

It is not an unprimeable number, because it can be changed into a prime (16239241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28155 + ... + 28725.

It is an arithmetic number, because the mean of its divisors is an integer number (557700).

Almost surely, 2^16239240 is an apocalyptic number.

16239240 is a gapful number since it is divisible by the number (10) 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 16239240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26769600).

16239240 is an abundant number, since it is smaller than the sum of its proper divisors (37299960).

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

16239240 is a wasteful number, since it uses less digits than its factorization.

16239240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16239240 is about 4029.7940394020. The cubic root of 16239240 is about 253.2339329948.

The spelling of 16239240 in words is "sixteen million, two hundred thirty-nine thousand, two hundred forty".