190105928 has 8 divisors (see below), whose sum is σ = 356448630. Its totient is φ = 95052960.

The previous prime is 190105897. The next prime is 190105957. The reversal of 190105928 is 829501091.

190105928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 109788484 + 80317444 = 10478^2 + 8962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×190105928² = 72280527721482368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11881613 + ... + 11881628.

Almost surely, 2^190105928 is an apocalyptic number.

It is an amenable number.

190105928 is a deficient number, since it is larger than the sum of its proper divisors (166342702).

190105928 is a wasteful number, since it uses less digits than its factorization.

190105928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23763247 (or 23763243 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 190105928 is about 13787.8906290991. The cubic root of 190105928 is about 574.9965247427.

The spelling of 190105928 in words is "one hundred ninety million, one hundred five thousand, nine hundred twenty-eight".