20763276 has 36 divisors (see below), whose sum is σ = 51142392. Its totient is φ = 6555456.

The previous prime is 20763271. The next prime is 20763283. The reversal of 20763276 is 67236702.

20763276 = 36² + 37² + ... + 396².

It is a super-2 number, since 2×20763276² = 862227260504352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20763271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1936 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1420622).

Almost surely, 2^20763276 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 20763276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25571196).

20763276 is an abundant number, since it is smaller than the sum of its proper divisors (30379116).

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

20763276 is a wasteful number, since it uses less digits than its factorization.

20763276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 20763276 is about 4556.6737868757. The cubic root of 20763276 is about 274.8518254096.

Adding to 20763276 its reverse (67236702), we get a palindrome (87999978).

The spelling of 20763276 in words is "twenty million, seven hundred sixty-three thousand, two hundred seventy-six".