1220431552 has 14 divisors (see below), whose sum is σ = 2421793988. Its totient is φ = 610215744.

The previous prime is 1220431549. The next prime is 1220431561. The reversal of 1220431552 is 2551340221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9534558 + ... + 9534685.

Almost surely, 2^1220431552 is an apocalyptic number.

It is an amenable number.

1220431552 is a deficient number, since it is larger than the sum of its proper divisors (1201362436).

1220431552 is an equidigital number, since it uses as much as digits as its factorization.

1220431552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19069255 (or 19069245 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1220431552 is about 34934.6754958451. The cubic root of 1220431552 is about 1068.6557060454.

Adding to 1220431552 its reverse (2551340221), we get a palindrome (3771771773).

The spelling of 1220431552 in words is "one billion, two hundred twenty million, four hundred thirty-one thousand, five hundred fifty-two".