1135890 has 64 divisors (see below), whose sum is σ = 3467520. Its totient is φ = 259200.

The previous prime is 1135879. The next prime is 1135891. The reversal of 1135890 is 985311.

1135890 = 11² + 12² + ... + 150².

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1135891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1590 + ... + 2190.

It is an arithmetic number, because the mean of its divisors is an integer number (54180).

2^1135890 is an apocalyptic number.

1135890 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 1135890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733760).

1135890 is an abundant number, since it is smaller than the sum of its proper divisors (2331630).

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

1135890 is a wasteful number, since it uses less digits than its factorization.

1135890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1135890 is about 1065.7814034782. The cubic root of 1135890 is about 104.3387009683.

It can be divided in two parts, 1135 and 890, that added together give a square (2025 = 45²).

The spelling of 1135890 in words is "one million, one hundred thirty-five thousand, eight hundred ninety".