4028918 has 4 divisors (see below), whose sum is σ = 6043380. Its totient is φ = 2014458.

The previous prime is 4028917. The next prime is 4028923. The reversal of 4028918 is 8198204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007228 + ... + 1007231.

It is an arithmetic number, because the mean of its divisors is an integer number (1510845).

Almost surely, 2^4028918 is an apocalyptic number.

4028918 is a deficient number, since it is larger than the sum of its proper divisors (2014462).

4028918 is a wasteful number, since it uses less digits than its factorization.

4028918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014461.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 4028918 is about 2007.2164806019. The cubic root of 4028918 is about 159.1217242275.

The spelling of 4028918 in words is "four million, twenty-eight thousand, nine hundred eighteen".