20822284 has 24 divisors (see below), whose sum is σ = 42019488. Its totient is φ = 8843520.

The previous prime is 20822281. The next prime is 20822287. The reversal of 20822284 is 48222802.

It is an interprime number because it is at equal distance from previous prime (20822281) and next prime (20822287).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822281) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 127 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (1750812).

Almost surely, 2^20822284 is an apocalyptic number.

It is an amenable number.

20822284 is an abundant number, since it is smaller than the sum of its proper divisors (21197204).

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

20822284 is a wasteful number, since it uses less digits than its factorization.

20822284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705 (or 6703 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20822284 is about 4563.1440915229. The cubic root of 20822284 is about 275.1119500123. Note that the first 3 decimals are identical.

The spelling of 20822284 in words is "twenty million, eight hundred twenty-two thousand, two hundred eighty-four".