1320778032 has 40 divisors (see below), whose sum is σ = 3899440896. Its totient is φ = 377365056.

The previous prime is 1320778009. The next prime is 1320778049. The reversal of 1320778032 is 2308770231.

1320778032 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1320777984 and 1320778002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1965108 + ... + 1965779.

Almost surely, 2^1320778032 is an apocalyptic number.

1320778032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320778032 is an abundant number, since it is smaller than the sum of its proper divisors (2578662864).

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

1320778032 is a wasteful number, since it uses less digits than its factorization.

1320778032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930905 (or 3930899 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 1320778032 is about 36342.5099848648. The cubic root of 1320778032 is about 1097.1767911364.

The spelling of 1320778032 in words is "one billion, three hundred twenty million, seven hundred seventy-eight thousand, thirty-two".