42891928 has 16 divisors (see below), whose sum is σ = 83196000. Its totient is φ = 20706336.

The previous prime is 42891923. The next prime is 42891931. The reversal of 42891928 is 82919824.

42891928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42891923) 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 in 3 ways as a sum of consecutive naturals, for example, 92208 + ... + 92671.

It is an arithmetic number, because the mean of its divisors is an integer number (5199750).

Almost surely, 2^42891928 is an apocalyptic number.

It is an amenable number.

42891928 is a deficient number, since it is larger than the sum of its proper divisors (40304072).

42891928 is a wasteful number, since it uses less digits than its factorization.

42891928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184914 (or 184910 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 42891928 is about 6549.1929273766. The cubic root of 42891928 is about 350.0460565242.

The spelling of 42891928 in words is "forty-two million, eight hundred ninety-one thousand, nine hundred twenty-eight".