20162473 has 4 divisors (see below), whose sum is σ = 20212180. Its totient is φ = 20112768.

The previous prime is 20162449. The next prime is 20162489. The reversal of 20162473 is 37426102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8690704 + 11471769 = 2948^2 + 3387^2 .

It is a cyclic number.

It is not a de Polignac number, because 20162473 - 2²¹ = 18065321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20162413) 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, 24240 + ... + 25057.

It is an arithmetic number, because the mean of its divisors is an integer number (5053045).

Almost surely, 2^20162473 is an apocalyptic number.

It is an amenable number.

20162473 is a deficient number, since it is larger than the sum of its proper divisors (49707).

20162473 is an equidigital number, since it uses as much as digits as its factorization.

20162473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49706.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20162473 is about 4490.2642461218. The cubic root of 20162473 is about 272.1748128338.

Adding to 20162473 its reverse (37426102), we get a palindrome (57588575).

It can be divided in two parts, 2016 and 2473, that added together give a square (4489 = 67²).

The spelling of 20162473 in words is "twenty million, one hundred sixty-two thousand, four hundred seventy-three".