16890330 has 16 divisors (see below), whose sum is σ = 40536864. Its totient is φ = 4504080.

The previous prime is 16890329. The next prime is 16890337. The reversal of 16890330 is 3309861.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 563011 = 16890330 / (1 + 6 + 8 + 9 + 0 + 3 + 3 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16890337) 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, 281476 + ... + 281535.

It is an arithmetic number, because the mean of its divisors is an integer number (2533554).

Almost surely, 2^16890330 is an apocalyptic number.

16890330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16890330 is an abundant number, since it is smaller than the sum of its proper divisors (23646534).

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

16890330 is a wasteful number, since it uses less digits than its factorization.

16890330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563021.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16890330 is about 4109.7846658919. The cubic root of 16890330 is about 256.5740394009.

The spelling of 16890330 in words is "sixteen million, eight hundred ninety thousand, three hundred thirty".