1320277340 has 24 divisors (see below), whose sum is σ = 2773500912. Its totient is φ = 527936000.

The previous prime is 1320277337. The next prime is 1320277363. The reversal of 1320277340 is 437720231.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 63215 + ... + 81465.

It is an arithmetic number, because the mean of its divisors is an integer number (115562538).

Almost surely, 2^1320277340 is an apocalyptic number.

1320277340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320277340 is an abundant number, since it is smaller than the sum of its proper divisors (1453223572).

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

1320277340 is a wasteful number, since it uses less digits than its factorization.

1320277340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21877 (or 21875 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 1320277340 is about 36335.6208148423. The cubic root of 1320277340 is about 1097.0381311798.

Adding to 1320277340 its reverse (437720231), we get a palindrome (1757997571).

The spelling of 1320277340 in words is "one billion, three hundred twenty million, two hundred seventy-seven thousand, three hundred forty".