16690340 has 24 divisors (see below), whose sum is σ = 35331072. Its totient is φ = 6622560.

The previous prime is 16690339. The next prime is 16690343. The reversal of 16690340 is 4309661.

It is not an unprimeable number, because it can be changed into a prime (16690343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (1472128).

Almost surely, 2^16690340 is an apocalyptic number.

16690340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16690340 is an abundant number, since it is smaller than the sum of its proper divisors (18640732).

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

16690340 is a wasteful number, since it uses less digits than its factorization.

16690340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707 (or 6705 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 16690340 is about 4085.3812551584. The cubic root of 16690340 is about 255.5573609058.

The spelling of 16690340 in words is "sixteen million, six hundred ninety thousand, three hundred forty".