20363228 has 6 divisors (see below), whose sum is σ = 35635656. Its totient is φ = 10181612.

The previous prime is 20363197. The next prime is 20363251. The reversal of 20363228 is 82236302.

It is a happy number.

It is a super-2 number, since 2×20363228² = 829322109159968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20363197 and 20363206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2545400 + ... + 2545407.

It is an arithmetic number, because the mean of its divisors is an integer number (5939276).

Almost surely, 2^20363228 is an apocalyptic number.

It is an amenable number.

20363228 is a deficient number, since it is larger than the sum of its proper divisors (15272428).

20363228 is a wasteful number, since it uses less digits than its factorization.

20363228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090811 (or 5090809 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20363228 is about 4512.5633513559. The cubic root of 20363228 is about 273.0751670364.

The spelling of 20363228 in words is "twenty million, three hundred sixty-three thousand, two hundred twenty-eight".