20263228 has 24 divisors (see below), whose sum is σ = 36867600. Its totient is φ = 9733248.

The previous prime is 20263219. The next prime is 20263237. The reversal of 20263228 is 82236202.

It is an interprime number because it is at equal distance from previous prime (20263219) and next prime (20263237).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35328 + ... + 35896.

It is an arithmetic number, because the mean of its divisors is an integer number (1536150).

Almost surely, 2^20263228 is an apocalyptic number.

It is an amenable number.

20263228 is a deficient number, since it is larger than the sum of its proper divisors (16604372).

20263228 is a wasteful number, since it uses less digits than its factorization.

20263228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20263228 is about 4501.4695378287. The cubic root of 20263228 is about 272.6274263056.

The spelling of 20263228 in words is "twenty million, two hundred sixty-three thousand, two hundred twenty-eight".