1320020032 has 14 divisors (see below), whose sum is σ = 2619414878. Its totient is φ = 660009984.

The previous prime is 1320020027. The next prime is 1320020077. The reversal of 1320020032 is 2300200231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 955057216 + 364962816 = 30904^2 + 19104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1320019994 and 1320020021.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10312593 + ... + 10312720.

Almost surely, 2^1320020032 is an apocalyptic number.

It is an amenable number.

1320020032 is a deficient number, since it is larger than the sum of its proper divisors (1299394846).

1320020032 is an equidigital number, since it uses as much as digits as its factorization.

1320020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20625325 (or 20625315 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1320020032 is about 36332.0799294508. The cubic root of 1320020032 is about 1096.9668595314.

Adding to 1320020032 its reverse (2300200231), we get a palindrome (3620220263).

The spelling of 1320020032 in words is "one billion, three hundred twenty million, twenty thousand, thirty-two".