1152056778 has 24 divisors (see below), whose sum is σ = 2328226272. Its totient is φ = 380041344.

The previous prime is 1152056771. The next prime is 1152056831. The reversal of 1152056778 is 8776502511.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1152056771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46251 + ... + 66657.

It is an arithmetic number, because the mean of its divisors is an integer number (97009428).

Almost surely, 2^1152056778 is an apocalyptic number.

1152056778 is an abundant number, since it is smaller than the sum of its proper divisors (1176169494).

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

1152056778 is an equidigital number, since it uses as much as digits as its factorization.

1152056778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20606 (or 20509 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 42.

The square root of 1152056778 is about 33941.9619055823. The cubic root of 1152056778 is about 1048.3137796755.

The spelling of 1152056778 in words is "one billion, one hundred fifty-two million, fifty-six thousand, seven hundred seventy-eight".