1126278720 has 504 divisors, whose sum is σ = 4715889984. Its totient is φ = 245532672.

The previous prime is 1126278691. The next prime is 1126278721. The reversal of 1126278720 is 278726211.

1126278720 is a `hidden beast` number, since 1 + 1 + 2 + 627 + 8 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1126278721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3245587 + ... + 3245933.

Almost surely, 2^1126278720 is an apocalyptic number.

1126278720 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 1126278720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357944992).

1126278720 is an abundant number, since it is smaller than the sum of its proper divisors (3589611264).

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

1126278720 is a wasteful number, since it uses less digits than its factorization.

1126278720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1126278720 is about 33560.0762812006. The cubic root of 1126278720 is about 1040.4358134015.

The spelling of 1126278720 in words is "one billion, one hundred twenty-six million, two hundred seventy-eight thousand, seven hundred twenty".