1162786128 has 80 divisors (see below), whose sum is σ = 3634945920. Its totient is φ = 312680448.

The previous prime is 1162786103. The next prime is 1162786129. The reversal of 1162786128 is 8216872611.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1162786128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162786129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96073 + ... + 107496.

It is an arithmetic number, because the mean of its divisors is an integer number (45436824).

Almost surely, 2^1162786128 is an apocalyptic number.

It is an amenable number.

1162786128 is an abundant number, since it is smaller than the sum of its proper divisors (2472159792).

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

1162786128 is a wasteful number, since it uses less digits than its factorization.

1162786128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203604 (or 203598 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 1162786128 is about 34099.6499688780. The cubic root of 1162786128 is about 1051.5581184755.

The spelling of 1162786128 in words is "one billion, one hundred sixty-two million, seven hundred eighty-six thousand, one hundred twenty-eight".