16943140 has 12 divisors (see below), whose sum is σ = 35580636. Its totient is φ = 6777248.

The previous prime is 16943137. The next prime is 16943141. The reversal of 16943140 is 4134961.

It can be written as a sum of positive squares in 2 ways, for example, as 6843456 + 10099684 = 2616^2 + 3178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16943099 and 16943108.

It is not an unprimeable number, because it can be changed into a prime (16943141) 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, 423559 + ... + 423598.

It is an arithmetic number, because the mean of its divisors is an integer number (2965053).

Almost surely, 2^16943140 is an apocalyptic number.

16943140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16943140 is an abundant number, since it is smaller than the sum of its proper divisors (18637496).

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

16943140 is a wasteful number, since it uses less digits than its factorization.

16943140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847166 (or 847164 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16943140 is about 4116.2045624580. The cubic root of 16943140 is about 256.8411661699.

The spelling of 16943140 in words is "sixteen million, nine hundred forty-three thousand, one hundred forty".