1087904 has 12 divisors (see below), whose sum is σ = 2141874. Its totient is φ = 543936.

The previous prime is 1087903. The next prime is 1087907. The reversal of 1087904 is 4097801.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 204304 = 940^2 + 452^2 .

It is a super-2 number, since 2×1087904² = 2367070226432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1087903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16967 + ... + 17030.

2^1087904 is an apocalyptic number.

It is an amenable number.

1087904 is a deficient number, since it is larger than the sum of its proper divisors (1053970).

1087904 is an equidigital number, since it uses as much as digits as its factorization.

1087904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34007 (or 33999 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1087904 is about 1043.0263659179. The cubic root of 1087904 is about 102.8482385002.

It can be divided in two parts, 1087 and 904, that added together give a palindrome (1991).

The spelling of 1087904 in words is "one million, eighty-seven thousand, nine hundred four".