20634276 has 48 divisors (see below), whose sum is σ = 52136000. Its totient is φ = 6314112.

The previous prime is 20634259. The next prime is 20634293. The reversal of 20634276 is 67243602.

It is an interprime number because it is at equal distance from previous prime (20634259) and next prime (20634293).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54255 + ... + 54633.

Almost surely, 2^20634276 is an apocalyptic number.

20634276 is a gapful number since it is divisible by the number (26) 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 20634276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26068000).

20634276 is an abundant number, since it is smaller than the sum of its proper divisors (31501724).

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

20634276 is a wasteful number, since it uses less digits than its factorization.

20634276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 20634276 is about 4542.4966703345. The cubic root of 20634276 is about 274.2814342400.

Adding to 20634276 its reverse (67243602), we get a palindrome (87877878).

It can be divided in two parts, 20634 and 276, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 20634276 in words is "twenty million, six hundred thirty-four thousand, two hundred seventy-six".