16947440 has 40 divisors (see below), whose sum is σ = 39580800. Its totient is φ = 6748416.

The previous prime is 16947431. The next prime is 16947451. The reversal of 16947440 is 4474961.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16947440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27617 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (989520).

Almost surely, 2^16947440 is an apocalyptic number.

16947440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16947440 is an abundant number, since it is smaller than the sum of its proper divisors (22633360).

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

16947440 is a wasteful number, since it uses less digits than its factorization.

16947440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 16947440 is about 4116.7268551605. The cubic root of 16947440 is about 256.8628922411.

The spelling of 16947440 in words is "sixteen million, nine hundred forty-seven thousand, four hundred forty".