1126890 has 48 divisors (see below), whose sum is σ = 3088800. Its totient is φ = 284256.

The previous prime is 1126889. The next prime is 1126897. The reversal of 1126890 is 986211.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1126897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1381 + ... + 2039.

It is an arithmetic number, because the mean of its divisors is an integer number (64350).

2^1126890 is an apocalyptic number.

1126890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1126890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544400).

1126890 is an abundant number, since it is smaller than the sum of its proper divisors (1961910).

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

1126890 is a wasteful number, since it uses less digits than its factorization.

1126890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1126890 is about 1061.5507524372. The cubic root of 1126890 is about 104.0624009143.

It can be divided in two parts, 1126 and 890, that added together give a triangular number (2016 = T₆₃).

The spelling of 1126890 in words is "one million, one hundred twenty-six thousand, eight hundred ninety".