16840386 has 24 divisors (see below), whose sum is σ = 37839984. Its totient is φ = 5613300.

The previous prime is 16840367. The next prime is 16840399. The reversal of 16840386 is 68304861.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16840386.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16840 + ... + 17811.

It is an arithmetic number, because the mean of its divisors is an integer number (1576666).

Almost surely, 2^16840386 is an apocalyptic number.

16840386 is an abundant number, since it is smaller than the sum of its proper divisors (20999598).

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

16840386 is an equidigital number, since it uses as much as digits as its factorization.

16840386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34668 (or 34656 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 16840386 is about 4103.7039366894. The cubic root of 16840386 is about 256.3208968218.

The spelling of 16840386 in words is "sixteen million, eight hundred forty thousand, three hundred eighty-six".