1139270628 has 48 divisors (see below), whose sum is σ = 2818710720. Its totient is φ = 357133824.

The previous prime is 1139270621. The next prime is 1139270641. The reversal of 1139270628 is 8260729311.

It is not an unprimeable number, because it can be changed into a prime (1139270621) 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, 13000 + ... + 49472.

It is an arithmetic number, because the mean of its divisors is an integer number (58723140).

Almost surely, 2^1139270628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139270628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409355360).

1139270628 is an abundant number, since it is smaller than the sum of its proper divisors (1679440092).

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

1139270628 is a wasteful number, since it uses less digits than its factorization.

1139270628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36636 (or 36634 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1139270628 is about 33753.0832369430. The cubic root of 1139270628 is about 1044.4210915641.

Adding to 1139270628 its reverse (8260729311), we get a palindrome (9399999939).

The spelling of 1139270628 in words is "one billion, one hundred thirty-nine million, two hundred seventy thousand, six hundred twenty-eight".