20536472 has 32 divisors (see below), whose sum is σ = 42411600. Its totient is φ = 9244800.

The previous prime is 20536471. The next prime is 20536513. The reversal of 20536472 is 27463502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20536471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8522 + ... + 10662.

Almost surely, 2^20536472 is an apocalyptic number.

20536472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20536472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21205800).

20536472 is an abundant number, since it is smaller than the sum of its proper divisors (21875128).

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

20536472 is a wasteful number, since it uses less digits than its factorization.

20536472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20536472 is about 4531.7184378556. The cubic root of 20536472 is about 273.8473940200.

Adding to 20536472 its reverse (27463502), we get a palindrome (47999974).

The spelling of 20536472 in words is "twenty million, five hundred thirty-six thousand, four hundred seventy-two".