1199578872 has 16 divisors (see below), whose sum is σ = 2998947240. Its totient is φ = 399859616.

The previous prime is 1199578859. The next prime is 1199578873. The reversal of 1199578872 is 2788759911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199578873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24991203 + ... + 24991250.

Almost surely, 2^1199578872 is an apocalyptic number.

1199578872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1199578872 is an abundant number, since it is smaller than the sum of its proper divisors (1799368368).

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

1199578872 is a wasteful number, since it uses less digits than its factorization.

1199578872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49982462 (or 49982458 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 57.

The square root of 1199578872 is about 34634.9371588863. The cubic root of 1199578872 is about 1062.5342448386.

The spelling of 1199578872 in words is "one billion, one hundred ninety-nine million, five hundred seventy-eight thousand, eight hundred seventy-two".