16191128 has 8 divisors (see below), whose sum is σ = 30358380. Its totient is φ = 8095560.

The previous prime is 16191127. The next prime is 16191139. The reversal of 16191128 is 82119161.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16191128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16191121) by changing a digit.

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 as a sum of consecutive naturals, namely, 1011938 + ... + 1011953.

Almost surely, 2^16191128 is an apocalyptic number.

It is an amenable number.

16191128 is a deficient number, since it is larger than the sum of its proper divisors (14167252).

16191128 is a wasteful number, since it uses less digits than its factorization.

16191128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023897 (or 2023893 counting only the distinct ones).

The product of its digits is 864, while the sum is 29.

The square root of 16191128 is about 4023.8200755004. The cubic root of 16191128 is about 252.9836002014.

The spelling of 16191128 in words is "sixteen million, one hundred ninety-one thousand, one hundred twenty-eight".