16850385 has 24 divisors (see below), whose sum is σ = 29922984. Its totient is φ = 8766720.

The previous prime is 16850381. The next prime is 16850387. The reversal of 16850385 is 58305861.

It can be written as a sum of positive squares in 4 ways, for example, as 665856 + 16184529 = 816^2 + 4023^2 .

It is not a de Polignac number, because 16850385 - 2² = 16850381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16850381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2722 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (1246791).

Almost surely, 2^16850385 is an apocalyptic number.

16850385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16850385 is a deficient number, since it is larger than the sum of its proper divisors (13072599).

16850385 is a wasteful number, since it uses less digits than its factorization.

16850385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185 (or 9182 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 16850385 is about 4104.9220455448. The cubic root of 16850385 is about 256.3716170678.

The spelling of 16850385 in words is "sixteen million, eight hundred fifty thousand, three hundred eighty-five".