20228306 has 32 divisors (see below), whose sum is σ = 36175872. Its totient is φ = 8300880.

The previous prime is 20228303. The next prime is 20228309. The reversal of 20228306 is 60382202.

It is an interprime number because it is at equal distance from previous prime (20228303) and next prime (20228309).

It is not an unprimeable number, because it can be changed into a prime (20228303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54935 + ... + 55301.

It is an arithmetic number, because the mean of its divisors is an integer number (1130496).

Almost surely, 2^20228306 is an apocalyptic number.

20228306 is a deficient number, since it is larger than the sum of its proper divisors (15947566).

20228306 is a wasteful number, since it uses less digits than its factorization.

20228306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20228306 is about 4497.5889096270. The cubic root of 20228306 is about 272.4707192958.

The spelling of 20228306 in words is "twenty million, two hundred twenty-eight thousand, three hundred six".