42911928 has 48 divisors (see below), whose sum is σ = 121277520. Its totient is φ = 13681536.

The previous prime is 42911917. The next prime is 42911929. The reversal of 42911928 is 82911924.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 42911892 and 42911901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42911929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11301 + ... + 14612.

It is an arithmetic number, because the mean of its divisors is an integer number (2526615).

Almost surely, 2^42911928 is an apocalyptic number.

It is an amenable number.

42911928 is an abundant number, since it is smaller than the sum of its proper divisors (78365592).

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

42911928 is a wasteful number, since it uses less digits than its factorization.

42911928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25948 (or 25941 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 42911928 is about 6550.7196551219. The cubic root of 42911928 is about 350.1004555187.

The spelling of 42911928 in words is "forty-two million, nine hundred eleven thousand, nine hundred twenty-eight".