20193228 has 36 divisors (see below), whose sum is σ = 55685448. Its totient is φ = 6119040.

The previous prime is 20193211. The next prime is 20193247. The reversal of 20193228 is 82239102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 25101 + ... + 25892.

It is an arithmetic number, because the mean of its divisors is an integer number (1546818).

Almost surely, 2^20193228 is an apocalyptic number.

It is an amenable number.

20193228 is an abundant number, since it is smaller than the sum of its proper divisors (35492220).

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

20193228 is a wasteful number, since it uses less digits than its factorization.

20193228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51014 (or 51009 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20193228 is about 4493.6875725845. The cubic root of 20193228 is about 272.3131305862.

The spelling of 20193228 in words is "twenty million, one hundred ninety-three thousand, two hundred twenty-eight".