1329556704 has 48 divisors (see below), whose sum is σ = 3988672128. Its totient is φ = 379873152.

The previous prime is 1329556703. The next prime is 1329556729. The reversal of 1329556704 is 4076559231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329556703) 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, 988582 + ... + 989925.

It is an arithmetic number, because the mean of its divisors is an integer number (83097336).

Almost surely, 2^1329556704 is an apocalyptic number.

1329556704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1329556704 is an abundant number, since it is smaller than the sum of its proper divisors (2659115424).

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

1329556704 is a wasteful number, since it uses less digits than its factorization.

1329556704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978527 (or 1978519 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 1329556704 is about 36463.0868687773. The cubic root of 1329556704 is about 1099.6022539936.

The spelling of 1329556704 in words is "one billion, three hundred twenty-nine million, five hundred fifty-six thousand, seven hundred four".