16990430 has 8 divisors (see below), whose sum is σ = 30582792. Its totient is φ = 6796168.

The previous prime is 16990417. The next prime is 16990439. The reversal of 16990430 is 3409961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849512 + ... + 849531.

It is an arithmetic number, because the mean of its divisors is an integer number (3822849).

Almost surely, 2^16990430 is an apocalyptic number.

16990430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16990430 is a deficient number, since it is larger than the sum of its proper divisors (13592362).

16990430 is a wasteful number, since it uses less digits than its factorization.

16990430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699050.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16990430 is about 4121.9449292779. The cubic root of 16990430 is about 257.0799006664.

The spelling of 16990430 in words is "sixteen million, nine hundred ninety thousand, four hundred thirty".