4257722 has 16 divisors (see below), whose sum is σ = 7551360. Its totient is φ = 1761648.

The previous prime is 4257697. The next prime is 4257733. The reversal of 4257722 is 2277524.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4838 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (471960).

Almost surely, 2^4257722 is an apocalyptic number.

4257722 is a deficient number, since it is larger than the sum of its proper divisors (3293638).

4257722 is a wasteful number, since it uses less digits than its factorization.

4257722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525.

The product of its digits is 7840, while the sum is 29.

The square root of 4257722 is about 2063.4248229582. The cubic root of 4257722 is about 162.0786337759.

The spelling of 4257722 in words is "four million, two hundred fifty-seven thousand, seven hundred twenty-two".