4221826 has 16 divisors (see below), whose sum is σ = 7406784. Its totient is φ = 1767024.

The previous prime is 4221799. The next prime is 4221827. The reversal of 4221826 is 6281224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4221826.

It is not an unprimeable number, because it can be changed into a prime (4221827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905 + ... + 4108.

It is an arithmetic number, because the mean of its divisors is an integer number (462924).

Almost surely, 2^4221826 is an apocalyptic number.

4221826 is a deficient number, since it is larger than the sum of its proper divisors (3184958).

4221826 is a wasteful number, since it uses less digits than its factorization.

4221826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065.

The product of its digits is 1536, while the sum is 25.

The square root of 4221826 is about 2054.7082517963. The cubic root of 4221826 is about 161.6218635664.

The spelling of 4221826 in words is "four million, two hundred twenty-one thousand, eight hundred twenty-six".