20945076 has 48 divisors (see below), whose sum is σ = 51038400. Its totient is φ = 6676992.

The previous prime is 20945053. The next prime is 20945081. The reversal of 20945076 is 67054902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48156 + ... + 48588.

It is an arithmetic number, because the mean of its divisors is an integer number (1063300).

Almost surely, 2^20945076 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 20945076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25519200).

20945076 is an abundant number, since it is smaller than the sum of its proper divisors (30093324).

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

20945076 is a wasteful number, since it uses less digits than its factorization.

20945076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20945076 is about 4576.5790717522. The cubic root of 20945076 is about 275.6516820031.

Adding to 20945076 its reverse (67054902), we get a palindrome (87999978).

The spelling of 20945076 in words is "twenty million, nine hundred forty-five thousand, seventy-six".