20236716 has 30 divisors (see below), whose sum is σ = 52903620. Its totient is φ = 6745464.

The previous prime is 20236687. The next prime is 20236717. The reversal of 20236716 is 61763202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20236716.

It is not an unprimeable number, because it can be changed into a prime (20236717) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30906 + ... + 31553.

It is an arithmetic number, because the mean of its divisors is an integer number (1763454).

Almost surely, 2^20236716 is an apocalyptic number.

It is an amenable number.

20236716 is an abundant number, since it is smaller than the sum of its proper divisors (32666904).

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

20236716 is a wasteful number, since it uses less digits than its factorization.

20236716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62475 (or 62464 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20236716 is about 4498.5237578566. The cubic root of 20236716 is about 272.5084743318.

Adding to 20236716 its reverse (61763202), we get a palindrome (81999918).

The spelling of 20236716 in words is "twenty million, two hundred thirty-six thousand, seven hundred sixteen".