16671040 has 56 divisors (see below), whose sum is σ = 40416480. Its totient is φ = 6547968.

The previous prime is 16671019. The next prime is 16671043. The reversal of 16671040 is 4017661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16670996 and 16671014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16671043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18439 + ... + 19321.

Almost surely, 2^16671040 is an apocalyptic number.

16671040 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 16671040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20208240).

16671040 is an abundant number, since it is smaller than the sum of its proper divisors (23745440).

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

16671040 is an equidigital number, since it uses as much as digits as its factorization.

16671040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 16671040 is about 4083.0184912635. The cubic root of 16671040 is about 255.4588176878.

The spelling of 16671040 in words is "sixteen million, six hundred seventy-one thousand, forty".