20925036 has 72 divisors (see below), whose sum is σ = 58850064. Its totient is φ = 6215040.

The previous prime is 20925029. The next prime is 20925041. The reversal of 20925036 is 63052902.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20490 + ... + 21486.

It is an arithmetic number, because the mean of its divisors is an integer number (817362).

Almost surely, 2^20925036 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 20925036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29425032).

20925036 is an abundant number, since it is smaller than the sum of its proper divisors (37925028).

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

20925036 is a wasteful number, since it uses less digits than its factorization.

20925036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20925036 is about 4574.3891395464. The cubic root of 20925036 is about 275.5637405313.

Adding to 20925036 its reverse (63052902), we get a palindrome (83977938).

The spelling of 20925036 in words is "twenty million, nine hundred twenty-five thousand, thirty-six".