1340999328 has 96 divisors (see below), whose sum is σ = 3740567040. Its totient is φ = 419454720.

The previous prime is 1340999281. The next prime is 1340999371. The reversal of 1340999328 is 8239990431.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191733 + ... + 198603.

It is an arithmetic number, because the mean of its divisors is an integer number (38964240).

Almost surely, 2^1340999328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340999328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870283520).

1340999328 is an abundant number, since it is smaller than the sum of its proper divisors (2399567712).

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

1340999328 is a wasteful number, since it uses less digits than its factorization.

1340999328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010 (or 7002 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 1340999328 is about 36619.6576718024. The cubic root of 1340999328 is about 1102.7477662616.

The spelling of 1340999328 in words is "one billion, three hundred forty million, nine hundred ninety-nine thousand, three hundred twenty-eight".