16403340 has 48 divisors (see below), whose sum is σ = 47416320. Its totient is φ = 4232640.

The previous prime is 16403311. The next prime is 16403363. The reversal of 16403340 is 4330461.

It is a zygodrome in base 9.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2550 + ... + 6269.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^16403340 is an apocalyptic number.

16403340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16403340 is an abundant number, since it is smaller than the sum of its proper divisors (31012980).

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

16403340 is a wasteful number, since it uses less digits than its factorization.

16403340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8862 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 16403340 is about 4050.1037023760. The cubic root of 16403340 is about 254.0840650092.

The spelling of 16403340 in words is "sixteen million, four hundred three thousand, three hundred forty".