4091928 has 16 divisors (see below), whose sum is σ = 10229880. Its totient is φ = 1363968.

The previous prime is 4091921. The next prime is 4091933. The reversal of 4091928 is 8291904.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85225 + ... + 85272.

Almost surely, 2^4091928 is an apocalyptic number.

It is an amenable number.

4091928 is an abundant number, since it is smaller than the sum of its proper divisors (6137952).

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

4091928 is a wasteful number, since it uses less digits than its factorization.

4091928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170506 (or 170502 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 4091928 is about 2022.8514527765. The cubic root of 4091928 is about 159.9469615869.

The spelling of 4091928 in words is "four million, ninety-one thousand, nine hundred twenty-eight".