16909140 has 48 divisors (see below), whose sum is σ = 49408128. Its totient is φ = 4312704.

The previous prime is 16909133. The next prime is 16909181. The reversal of 16909140 is 4190961.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16909098 and 16909107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4747 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (1029336).

Almost surely, 2^16909140 is an apocalyptic number.

16909140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16909140 is an abundant number, since it is smaller than the sum of its proper divisors (32498988).

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

16909140 is a wasteful number, since it uses less digits than its factorization.

16909140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12288 (or 12286 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 16909140 is about 4112.0724701785. The cubic root of 16909140 is about 256.6692490511.

The spelling of 16909140 in words is "sixteen million, nine hundred nine thousand, one hundred forty".