1329872740 has 48 divisors (see below), whose sum is σ = 3256848000. Its totient is φ = 455954016.

The previous prime is 1329872737. The next prime is 1329872741. The reversal of 1329872740 is 472789231.

It is not an unprimeable number, because it can be changed into a prime (1329872741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90070 + ... + 103789.

It is an arithmetic number, because the mean of its divisors is an integer number (67851000).

Almost surely, 2^1329872740 is an apocalyptic number.

1329872740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1329872740 is an abundant number, since it is smaller than the sum of its proper divisors (1926975260).

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

1329872740 is a wasteful number, since it uses less digits than its factorization.

1329872740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193889 (or 193873 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1329872740 is about 36467.4202542489. The cubic root of 1329872740 is about 1099.6893723456.

The spelling of 1329872740 in words is "one billion, three hundred twenty-nine million, eight hundred seventy-two thousand, seven hundred forty".