1126780872 has 96 divisors (see below), whose sum is σ = 3288589920. Its totient is φ = 320785920.

The previous prime is 1126780813. The next prime is 1126780891. The reversal of 1126780872 is 2780876211.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359472 + ... + 362592.

It is an arithmetic number, because the mean of its divisors is an integer number (34256145).

Almost surely, 2^1126780872 is an apocalyptic number.

1126780872 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 1126780872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644294960).

1126780872 is an abundant number, since it is smaller than the sum of its proper divisors (2161809048).

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

1126780872 is a wasteful number, since it uses less digits than its factorization.

1126780872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1126780872 is about 33567.5568369222. The cubic root of 1126780872 is about 1040.5904167244.

The spelling of 1126780872 in words is "one billion, one hundred twenty-six million, seven hundred eighty thousand, eight hundred seventy-two".