1128540244 has 24 divisors (see below), whose sum is σ = 2195475968. Its totient is φ = 504061920.

The previous prime is 1128540233. The next prime is 1128540247. The reversal of 1128540244 is 4420458211.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128540247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348432 + ... + 351655.

Almost surely, 2^1128540244 is an apocalyptic number.

It is an amenable number.

1128540244 is a deficient number, since it is larger than the sum of its proper divisors (1066935724).

1128540244 is a wasteful number, since it uses less digits than its factorization.

1128540244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700135 (or 700133 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 1128540244 is about 33593.7530502324. The cubic root of 1128540244 is about 1041.1317327401.

Adding to 1128540244 its reverse (4420458211), we get a palindrome (5548998455).

It can be divided in two parts, 11285 and 40244, that added together give a square (51529 = 227²).

The spelling of 1128540244 in words is "one billion, one hundred twenty-eight million, five hundred forty thousand, two hundred forty-four".