1347239992 has 128 divisors (see below), whose sum is σ = 3157056000. Its totient is φ = 526141440.

The previous prime is 1347239947. The next prime is 1347240023. The reversal of 1347239992 is 2999327431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3882363 + ... + 3882709.

It is an arithmetic number, because the mean of its divisors is an integer number (24664500).

Almost surely, 2^1347239992 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 1347239992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578528000).

1347239992 is an abundant number, since it is smaller than the sum of its proper divisors (1809816008).

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

1347239992 is a wasteful number, since it uses less digits than its factorization.

1347239992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 505 counting only the distinct ones).

The product of its digits is 734832, while the sum is 49.

The square root of 1347239992 is about 36704.7679736570. The cubic root of 1347239992 is about 1104.4557537711.

The spelling of 1347239992 in words is "one billion, three hundred forty-seven million, two hundred thirty-nine thousand, nine hundred ninety-two".