16338840 has 128 divisors (see below), whose sum is σ = 57231360. Its totient is φ = 3654144.

The previous prime is 16338781. The next prime is 16338851. The reversal of 16338840 is 4883361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44337 + ... + 44703.

It is an arithmetic number, because the mean of its divisors is an integer number (447120).

Almost surely, 2^16338840 is an apocalyptic number.

16338840 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 16338840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28615680).

16338840 is an abundant number, since it is smaller than the sum of its proper divisors (40892520).

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

16338840 is a wasteful number, since it uses less digits than its factorization.

16338840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 16338840 is about 4042.1331002331. The cubic root of 16338840 is about 253.7505973600.

The spelling of 16338840 in words is "sixteen million, three hundred thirty-eight thousand, eight hundred forty".