1187828 has 12 divisors (see below), whose sum is σ = 2093700. Its totient is φ = 589632.

The previous prime is 1187821. The next prime is 1187833. The reversal of 1187828 is 8287811.

It can be written as a sum of positive squares in 2 ways, for example, as 478864 + 708964 = 692^2 + 842^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187821) 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, 401 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (174475).

2^1187828 is an apocalyptic number.

It is an amenable number.

1187828 is a deficient number, since it is larger than the sum of its proper divisors (905872).

1187828 is a wasteful number, since it uses less digits than its factorization.

1187828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2144 counting only the distinct ones).

The product of its digits is 7168, while the sum is 35.

The square root of 1187828 is about 1089.8752222158. The cubic root of 1187828 is about 105.9053385344.

The spelling of 1187828 in words is "one million, one hundred eighty-seven thousand, eight hundred twenty-eight".