1126879920 has 120 divisors (see below), whose sum is σ = 3792449232. Its totient is φ = 299865600.

The previous prime is 1126879913. The next prime is 1126879939. The reversal of 1126879920 is 299786211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409750 + ... + 412490.

Almost surely, 2^1126879920 is an apocalyptic number.

1126879920 is a gapful number since it is divisible by the number (10) 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 1126879920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1896224616).

1126879920 is an abundant number, since it is smaller than the sum of its proper divisors (2665569312).

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

1126879920 is a wasteful number, since it uses less digits than its factorization.

1126879920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1126879920 is about 33569.0321576300. The cubic root of 1126879920 is about 1040.6209063497.

The spelling of 1126879920 in words is "one billion, one hundred twenty-six million, eight hundred seventy-nine thousand, nine hundred twenty".