16443340 has 12 divisors (see below), whose sum is σ = 34531056. Its totient is φ = 6577328.

The previous prime is 16443331. The next prime is 16443347. The reversal of 16443340 is 4334461.

It is a happy number.

It is a super-3 number, since 3×16443340³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16443347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411064 + ... + 411103.

It is an arithmetic number, because the mean of its divisors is an integer number (2877588).

Almost surely, 2^16443340 is an apocalyptic number.

16443340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16443340 is an abundant number, since it is smaller than the sum of its proper divisors (18087716).

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

16443340 is a wasteful number, since it uses less digits than its factorization.

16443340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822176 (or 822174 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 16443340 is about 4055.0388407511. The cubic root of 16443340 is about 254.2904277085.

The spelling of 16443340 in words is "sixteen million, four hundred forty-three thousand, three hundred forty".