4028427 has 32 divisors (see below), whose sum is σ = 6720000. Its totient is φ = 2366496.

The previous prime is 4028413. The next prime is 4028429. The reversal of 4028427 is 7248204.

It is not a de Polignac number, because 4028427 - 2⁶ = 4028363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 4028427.

It is not an unprimeable number, because it can be changed into a prime (4028429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7824 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (210000).

Almost surely, 2^4028427 is an apocalyptic number.

4028427 is a deficient number, since it is larger than the sum of its proper divisors (2691573).

4028427 is a wasteful number, since it uses less digits than its factorization.

4028427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 4028427 is about 2007.0941681944. The cubic root of 4028427 is about 159.1152599659.

The spelling of 4028427 in words is "four million, twenty-eight thousand, four hundred twenty-seven".