190907128 has 8 divisors (see below), whose sum is σ = 357950880. Its totient is φ = 95453560.

The previous prime is 190907089. The next prime is 190907131. The reversal of 190907128 is 821709091.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 11931688 + ... + 11931703.

It is an arithmetic number, because the mean of its divisors is an integer number (44743860).

Almost surely, 2^190907128 is an apocalyptic number.

It is an amenable number.

190907128 is a deficient number, since it is larger than the sum of its proper divisors (167043752).

190907128 is a wasteful number, since it uses less digits than its factorization.

190907128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23863397 (or 23863393 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 190907128 is about 13816.9145615076. The cubic root of 190907128 is about 575.8031654472.

The spelling of 190907128 in words is "one hundred ninety million, nine hundred seven thousand, one hundred twenty-eight".