4221788 has 24 divisors (see below), whose sum is σ = 7798560. Its totient is φ = 1995840.

The previous prime is 4221787. The next prime is 4221799. The reversal of 4221788 is 8871224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221787) 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, 9818 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (324940).

Almost surely, 2^4221788 is an apocalyptic number.

It is an amenable number.

4221788 is a deficient number, since it is larger than the sum of its proper divisors (3576772).

4221788 is a wasteful number, since it uses less digits than its factorization.

4221788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 4221788 is about 2054.6990047206. The cubic root of 4221788 is about 161.6213786538.

The spelling of 4221788 in words is "four million, two hundred twenty-one thousand, seven hundred eighty-eight".