4228540 has 12 divisors (see below), whose sum is σ = 8879976. Its totient is φ = 1691408.

The previous prime is 4228537. The next prime is 4228559. The reversal of 4228540 is 458224.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105694 + ... + 105733.

It is an arithmetic number, because the mean of its divisors is an integer number (739998).

Almost surely, 2^4228540 is an apocalyptic number.

It is an amenable number.

4228540 is an abundant number, since it is smaller than the sum of its proper divisors (4651436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4228540 is a wasteful number, since it uses less digits than its factorization.

4228540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211436 (or 211434 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 4228540 is about 2056.3414113420. The cubic root of 4228540 is about 161.7074943235.

It can be divided in two parts, 42 and 28540, that added together give a palindrome (28582).

The spelling of 4228540 in words is "four million, two hundred twenty-eight thousand, five hundred forty".