1220230438 has 24 divisors (see below), whose sum is σ = 2181115944. Its totient is φ = 510199200.

The previous prime is 1220230373. The next prime is 1220230439. The reversal of 1220230438 is 8340320221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220230439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147828 + ... + 155863.

It is an arithmetic number, because the mean of its divisors is an integer number (90879831).

Almost surely, 2^1220230438 is an apocalyptic number.

1220230438 is a deficient number, since it is larger than the sum of its proper divisors (960885506).

1220230438 is a wasteful number, since it uses less digits than its factorization.

1220230438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303748 (or 303741 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1220230438 is about 34931.7969477667. The cubic root of 1220230438 is about 1068.5970018299.

Adding to 1220230438 its reverse (8340320221), we get a palindrome (9560550659).

The spelling of 1220230438 in words is "one billion, two hundred twenty million, two hundred thirty thousand, four hundred thirty-eight".