1220444432 has 10 divisors (see below), whose sum is σ = 2364611118. Its totient is φ = 610222208.

The previous prime is 1220444429. The next prime is 1220444443. The reversal of 1220444432 is 2344440221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 686649616 + 533794816 = 26204^2 + 23104^2 .

It is a super-2 number, since 2×1220444432² = 2978969223199605248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38138873 + ... + 38138904.

Almost surely, 2^1220444432 is an apocalyptic number.

It is an amenable number.

1220444432 is a deficient number, since it is larger than the sum of its proper divisors (1144166686).

1220444432 is an equidigital number, since it uses as much as digits as its factorization.

1220444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76277785 (or 76277779 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1220444432 is about 34934.8598394211. The cubic root of 1220444432 is about 1068.6594654361.

Adding to 1220444432 its reverse (2344440221), we get a palindrome (3564884653).

The spelling of 1220444432 in words is "one billion, two hundred twenty million, four hundred forty-four thousand, four hundred thirty-two".