1145744 has 20 divisors (see below), whose sum is σ = 2245020. Its totient is φ = 566400.

The previous prime is 1145743. The next prime is 1145747. The reversal of 1145744 is 4475411.

It can be written as a sum of positive squares in 2 ways, for example, as 672400 + 473344 = 820^2 + 688^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 1 + 1 + 4⁴ + 5⁷ + 7⁴ + 4⁷ + 4¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (1145741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262 + ... + 1970.

It is an arithmetic number, because the mean of its divisors is an integer number (112251).

2^1145744 is an apocalyptic number.

It is an amenable number.

1145744 is a deficient number, since it is larger than the sum of its proper divisors (1099276).

1145744 is a wasteful number, since it uses less digits than its factorization.

1145744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 1145744 is about 1070.3943198653. The cubic root of 1145744 is about 104.6395501357.

The spelling of 1145744 in words is "one million, one hundred forty-five thousand, seven hundred forty-four".