16420727 has 4 divisors (see below), whose sum is σ = 16430856. Its totient is φ = 16410600.

The previous prime is 16420721. The next prime is 16420739. The reversal of 16420727 is 72702461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16420727 - 2²⁰ = 15372151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16420727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420721) by changing a digit.

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, 2024 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (4107714).

Almost surely, 2^16420727 is an apocalyptic number.

16420727 is a deficient number, since it is larger than the sum of its proper divisors (10129).

16420727 is an equidigital number, since it uses as much as digits as its factorization.

16420727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 16420727 is about 4052.2496221235. The cubic root of 16420727 is about 254.1738068883.

The spelling of 16420727 in words is "sixteen million, four hundred twenty thousand, seven hundred twenty-seven".