1432221220 has 12 divisors (see below), whose sum is σ = 3007664604. Its totient is φ = 572888480.

The previous prime is 1432221157. The next prime is 1432221221. The reversal of 1432221220 is 221222341.

It can be written as a sum of positive squares in 2 ways, for example, as 1031180544 + 401040676 = 32112^2 + 20026^2 .

It is not an unprimeable number, because it can be changed into a prime (1432221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35805511 + ... + 35805550.

It is an arithmetic number, because the mean of its divisors is an integer number (250638717).

Almost surely, 2^1432221220 is an apocalyptic number.

1432221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1432221220 is an abundant number, since it is smaller than the sum of its proper divisors (1575443384).

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

1432221220 is a wasteful number, since it uses less digits than its factorization.

1432221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71611070 (or 71611068 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1432221220 is about 37844.6987040457. The cubic root of 1432221220 is about 1127.2061977535.

Adding to 1432221220 its reverse (221222341), we get a palindrome (1653443561).

The spelling of 1432221220 in words is "one billion, four hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty".