20316572 has 6 divisors (see below), whose sum is σ = 35554008. Its totient is φ = 10158284.

The previous prime is 20316551. The next prime is 20316577. The reversal of 20316572 is 27561302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539568 + ... + 2539575.

It is an arithmetic number, because the mean of its divisors is an integer number (5925668).

Almost surely, 2^20316572 is an apocalyptic number.

It is an amenable number.

20316572 is a deficient number, since it is larger than the sum of its proper divisors (15237436).

20316572 is a wasteful number, since it uses less digits than its factorization.

20316572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079147 (or 5079145 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20316572 is about 4507.3908195318. The cubic root of 20316572 is about 272.8664519648.

Adding to 20316572 its reverse (27561302), we get a palindrome (47877874).

The spelling of 20316572 in words is "twenty million, three hundred sixteen thousand, five hundred seventy-two".