20022276 has 48 divisors (see below), whose sum is σ = 49613760. Its totient is φ = 6266880.

The previous prime is 20022269. The next prime is 20022283. The reversal of 20022276 is 67222002.

It is an interprime number because it is at equal distance from previous prime (20022269) and next prime (20022283).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30916 + ... + 31556.

It is an arithmetic number, because the mean of its divisors is an integer number (1033620).

Almost surely, 2^20022276 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 20022276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24806880).

20022276 is an abundant number, since it is smaller than the sum of its proper divisors (29591484).

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

20022276 is a wasteful number, since it uses less digits than its factorization.

20022276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20022276 is about 4474.6257944101. The cubic root of 20022276 is about 271.5425015454.

Adding to 20022276 its reverse (67222002), we get a palindrome (87244278).

It can be divided in two parts, 2002 and 2276, that added together give a triangular number (4278 = T₉₂).

The spelling of 20022276 in words is "twenty million, twenty-two thousand, two hundred seventy-six".