1128261 has 8 divisors (see below), whose sum is σ = 1525824. Its totient is φ = 741440.

The previous prime is 1128251. The next prime is 1128287. The reversal of 1128261 is 1628211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128251) 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, 2436 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (190728).

2^1128261 is an apocalyptic number.

It is an amenable number.

1128261 is a deficient number, since it is larger than the sum of its proper divisors (397563).

1128261 is an equidigital number, since it uses as much as digits as its factorization.

1128261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371.

The product of its digits is 192, while the sum is 21.

The square root of 1128261 is about 1062.1963095398. The cubic root of 1128261 is about 104.1045853726.

The spelling of 1128261 in words is "one million, one hundred twenty-eight thousand, two hundred sixty-one".