1128261057 has 16 divisors (see below), whose sum is σ = 1875551232. Its totient is φ = 586109520.

The previous prime is 1128261053. The next prime is 1128261077. The reversal of 1128261057 is 7501628211.

It is not a de Polignac number, because 1128261057 - 2² = 1128261053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1128261053) 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 15 ways as a sum of consecutive naturals, for example, 2441893 + ... + 2442354.

It is an arithmetic number, because the mean of its divisors is an integer number (117221952).

Almost surely, 2^1128261057 is an apocalyptic number.

It is an amenable number.

1128261057 is a deficient number, since it is larger than the sum of its proper divisors (747290175).

1128261057 is a wasteful number, since it uses less digits than its factorization.

1128261057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884268.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1128261057 is about 33589.5974521875. The cubic root of 1128261057 is about 1041.0458712569.

Adding to 1128261057 its reverse (7501628211), we get a palindrome (8629889268).

The spelling of 1128261057 in words is "one billion, one hundred twenty-eight million, two hundred sixty-one thousand, fifty-seven".