16840430 has 16 divisors (see below), whose sum is σ = 30697920. Its totient is φ = 6650592.

The previous prime is 16840399. The next prime is 16840433. The reversal of 16840430 is 3404861.

It is a self number, because there is not a number n which added to its sum of digits gives 16840430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9869 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (1918620).

Almost surely, 2^16840430 is an apocalyptic number.

16840430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16840430 is a deficient number, since it is larger than the sum of its proper divisors (13857490).

16840430 is a wasteful number, since it uses less digits than its factorization.

16840430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21403.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16840430 is about 4103.7092976964. The cubic root of 16840430 is about 256.3211200571.

The spelling of 16840430 in words is "sixteen million, eight hundred forty thousand, four hundred thirty".