1329260056 has 32 divisors (see below), whose sum is σ = 2648373840. Its totient is φ = 623305728.

The previous prime is 1329260033. The next prime is 1329260059. The reversal of 1329260056 is 6500629231.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329260059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21220 + ... + 55756.

Almost surely, 2^1329260056 is an apocalyptic number.

It is an amenable number.

1329260056 is a deficient number, since it is larger than the sum of its proper divisors (1319113784).

1329260056 is a wasteful number, since it uses less digits than its factorization.

1329260056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34843 (or 34839 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1329260056 is about 36459.0188567932. The cubic root of 1329260056 is about 1099.5204675677.

Adding to 1329260056 its reverse (6500629231), we get a palindrome (7829889287).

The spelling of 1329260056 in words is "one billion, three hundred twenty-nine million, two hundred sixty thousand, fifty-six".