1220320232 has 16 divisors (see below), whose sum is σ = 2367000900. Its totient is φ = 589120000.

The previous prime is 1220320229. The next prime is 1220320247. The reversal of 1220320232 is 2320230221.

It can be written as a sum of positive squares in 2 ways, for example, as 1137982756 + 82337476 = 33734^2 + 9074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220320232.

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, 2629769 + ... + 2630232.

Almost surely, 2^1220320232 is an apocalyptic number.

It is an amenable number.

1220320232 is a deficient number, since it is larger than the sum of its proper divisors (1146680668).

1220320232 is a wasteful number, since it uses less digits than its factorization.

1220320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260036 (or 5260032 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1220320232 is about 34933.0822001151. The cubic root of 1220320232 is about 1068.6232130664.

Adding to 1220320232 its reverse (2320230221), we get a palindrome (3540550453).

The spelling of 1220320232 in words is "one billion, two hundred twenty million, three hundred twenty thousand, two hundred thirty-two".