16803390 has 16 divisors (see below), whose sum is σ = 40328208. Its totient is φ = 4480896.

The previous prime is 16803349. The next prime is 16803401. The reversal of 16803390 is 9330861.

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: 560113 = 16803390 / (1 + 6 + 8 + 0 + 3 + 3 + 9 + 0).

It is a congruent number.

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, 280027 + ... + 280086.

It is an arithmetic number, because the mean of its divisors is an integer number (2520513).

Almost surely, 2^16803390 is an apocalyptic number.

16803390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16803390 is an abundant number, since it is smaller than the sum of its proper divisors (23524818).

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

16803390 is a wasteful number, since it uses less digits than its factorization.

16803390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560123.

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

The square root of 16803390 is about 4099.1938231804. The cubic root of 16803390 is about 256.1330586777.

The spelling of 16803390 in words is "sixteen million, eight hundred three thousand, three hundred ninety".