1145844 has 36 divisors (see below), whose sum is σ = 3310944. Its totient is φ = 327312.

The previous prime is 1145843. The next prime is 1145849. The reversal of 1145844 is 4485411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1145844³ = 4513336763326114752, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2022 + ... + 2525.

2^1145844 is an apocalyptic number.

1145844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1145844 is an abundant number, since it is smaller than the sum of its proper divisors (2165100).

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

1145844 is a wasteful number, since it uses less digits than its factorization.

1145844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564 (or 4559 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 1145844 is about 1070.4410306037. The cubic root of 1145844 is about 104.6425943441.

The spelling of 1145844 in words is "one million, one hundred forty-five thousand, eight hundred forty-four".