1340983872 has 84 divisors (see below), whose sum is σ = 3883475596. Its totient is φ = 442368000.

The previous prime is 1340983823. The next prime is 1340983873. The reversal of 1340983872 is 2783890431.

It can be written as a sum of positive squares in 2 ways, for example, as 478034496 + 862949376 = 21864^2 + 29376^2 .

It is a super-2 number, since 2×1340983872² = 3596475489928224768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340983873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43872 + ... + 67872.

Almost surely, 2^1340983872 is an apocalyptic number.

1340983872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340983872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941737798).

1340983872 is an abundant number, since it is smaller than the sum of its proper divisors (2542491724).

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

1340983872 is a wasteful number, since it uses less digits than its factorization.

1340983872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24116 (or 24103 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1340983872 is about 36619.4466369988. The cubic root of 1340983872 is about 1102.7435295866.

The spelling of 1340983872 in words is "one billion, three hundred forty million, nine hundred eighty-three thousand, eight hundred seventy-two".