16816940 has 24 divisors (see below), whose sum is σ = 40360992. Its totient is φ = 5765760.

The previous prime is 16816939. The next prime is 16816951. The reversal of 16816940 is 4961861.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 16816940.

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, 59921 + ... + 60200.

It is an arithmetic number, because the mean of its divisors is an integer number (1681708).

Almost surely, 2^16816940 is an apocalyptic number.

16816940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16816940 is an abundant number, since it is smaller than the sum of its proper divisors (23544052).

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

16816940 is a wasteful number, since it uses less digits than its factorization.

16816940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120137 (or 120135 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 16816940 is about 4100.8462541285. The cubic root of 16816940 is about 256.2018874573.

The spelling of 16816940 in words is "sixteen million, eight hundred sixteen thousand, nine hundred forty".