190000911228 has 12 divisors (see below), whose sum is σ = 443335459560. Its totient is φ = 63333637072.

The previous prime is 190000911227. The next prime is 190000911239. The reversal of 190000911228 is 822119000091.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×190000911228² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190000911227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7916704623 + ... + 7916704646.

It is an arithmetic number, because the mean of its divisors is an integer number (36944621630).

Almost surely, 2^190000911228 is an apocalyptic number.

It is an amenable number.

190000911228 is an abundant number, since it is smaller than the sum of its proper divisors (253334548332).

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

190000911228 is a wasteful number, since it uses less digits than its factorization.

190000911228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15833409276 (or 15833409274 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 190000911228 in words is "one hundred ninety billion, nine hundred eleven thousand, two hundred twenty-eight".