16339840 has 96 divisors (see below), whose sum is σ = 43139880. Its totient is φ = 5913600.

The previous prime is 16339811. The next prime is 16339877. The reversal of 16339840 is 4893361.

It is a junction number, because it is equal to n+sod(n) for n = 16339796 and 16339805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77335 + ... + 77545.

Almost surely, 2^16339840 is an apocalyptic number.

16339840 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 16339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21569940).

16339840 is an abundant number, since it is smaller than the sum of its proper divisors (26800040).

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

16339840 is a wasteful number, since it uses less digits than its factorization.

16339840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 16339840 is about 4042.2567954053. The cubic root of 16339840 is about 253.7557740927.

It can be divided in two parts, 163398 and 40, that multiplied together give a triangular number (6535920 = T₃₆₁₅).

The spelling of 16339840 in words is "sixteen million, three hundred thirty-nine thousand, eight hundred forty".