20234536 has 32 divisors (see below), whose sum is σ = 44015040. Its totient is φ = 8540928.

The previous prime is 20234521. The next prime is 20234551. The reversal of 20234536 is 63543202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20234521) and next prime (20234551).

It is a self number, because there is not a number n which added to its sum of digits gives 20234536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (1375470).

Almost surely, 2^20234536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20234536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22007520).

20234536 is an abundant number, since it is smaller than the sum of its proper divisors (23780504).

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

20234536 is a wasteful number, since it uses less digits than its factorization.

20234536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473 (or 5469 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20234536 is about 4498.2814496205. The cubic root of 20234536 is about 272.4986886563.

Adding to 20234536 its reverse (63543202), we get a palindrome (83777738).

The spelling of 20234536 in words is "twenty million, two hundred thirty-four thousand, five hundred thirty-six".