16706420 has 12 divisors (see below), whose sum is σ = 35083524. Its totient is φ = 6682560.

The previous prime is 16706419. The next prime is 16706447. The reversal of 16706420 is 2460761.

It can be written as a sum of positive squares in 2 ways, for example, as 8832784 + 7873636 = 2972^2 + 2806^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16706420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417641 + ... + 417680.

It is an arithmetic number, because the mean of its divisors is an integer number (2923627).

Almost surely, 2^16706420 is an apocalyptic number.

16706420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16706420 is an abundant number, since it is smaller than the sum of its proper divisors (18377104).

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

16706420 is a wasteful number, since it uses less digits than its factorization.

16706420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835330 (or 835328 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16706420 is about 4087.3487739609. The cubic root of 16706420 is about 255.6394052375.

The spelling of 16706420 in words is "sixteen million, seven hundred six thousand, four hundred twenty".