16384740 has 96 divisors (see below), whose sum is σ = 49545216. Its totient is φ = 4033920.

The previous prime is 16384729. The next prime is 16384757. The reversal of 16384740 is 4748361.

16384740 = 833² + 834² + ... + 855².

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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 31 ways as a sum of consecutive naturals, for example, 42589 + ... + 42971.

It is an arithmetic number, because the mean of its divisors is an integer number (516096).

Almost surely, 2^16384740 is an apocalyptic number.

16384740 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 16384740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24772608).

16384740 is an abundant number, since it is smaller than the sum of its proper divisors (33160476).

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

16384740 is a wasteful number, since it uses less digits than its factorization.

16384740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 16384740 is about 4047.8068135720. The cubic root of 16384740 is about 253.9879920750.

The spelling of 16384740 in words is "sixteen million, three hundred eighty-four thousand, seven hundred forty".