4217428 has 24 divisors (see below), whose sum is σ = 7900200. Its totient is φ = 1963008.

The previous prime is 4217417. The next prime is 4217431. The reversal of 4217428 is 8247124.

It can be written as a sum of positive squares in 4 ways, for example, as 824464 + 3392964 = 908^2 + 1842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4217396 and 4217405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7128 + ... + 7696.

It is an arithmetic number, because the mean of its divisors is an integer number (329175).

Almost surely, 2^4217428 is an apocalyptic number.

It is an amenable number.

4217428 is a deficient number, since it is larger than the sum of its proper divisors (3682772).

4217428 is a wasteful number, since it uses less digits than its factorization.

4217428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 4217428 is about 2053.6377479974. The cubic root of 4217428 is about 161.5657219882.

The spelling of 4217428 in words is "four million, two hundred seventeen thousand, four hundred twenty-eight".