16339820 has 48 divisors (see below), whose sum is σ = 39567360. Its totient is φ = 5552064.

The previous prime is 16339811. The next prime is 16339877. The reversal of 16339820 is 2893361.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17321 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (824320).

Almost surely, 2^16339820 is an apocalyptic number.

16339820 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 16339820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19783680).

16339820 is an abundant number, since it is smaller than the sum of its proper divisors (23227540).

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

16339820 is a wasteful number, since it uses less digits than its factorization.

16339820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16339820 is about 4042.2543215389. The cubic root of 16339820 is about 253.7556705601.

The spelling of 16339820 in words is "sixteen million, three hundred thirty-nine thousand, eight hundred twenty".