16420983 has 4 divisors (see below), whose sum is σ = 21894648. Its totient is φ = 10947320.

The previous prime is 16420961. The next prime is 16421023. The reversal of 16420983 is 38902461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16420983 - 2¹⁰ = 16419959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2736828 + ... + 2736833.

It is an arithmetic number, because the mean of its divisors is an integer number (5473662).

Almost surely, 2^16420983 is an apocalyptic number.

16420983 is a deficient number, since it is larger than the sum of its proper divisors (5473665).

16420983 is an equidigital number, since it uses as much as digits as its factorization.

16420983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473664.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 16420983 is about 4052.2812093931. The cubic root of 16420983 is about 254.1751277425.

It can be divided in two parts, 1642098 and 3, that multiplied together give a palindrome (4926294).

The spelling of 16420983 in words is "sixteen million, four hundred twenty thousand, nine hundred eighty-three".