1087404 has 12 divisors (see below), whose sum is σ = 2537304. Its totient is φ = 362464.

The previous prime is 1087391. The next prime is 1087409. The reversal of 1087404 is 4047801.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1087409) 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, 45297 + ... + 45320.

It is an arithmetic number, because the mean of its divisors is an integer number (211442).

2^1087404 is an apocalyptic number.

It is an amenable number.

1087404 is an abundant number, since it is smaller than the sum of its proper divisors (1449900).

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

1087404 is a wasteful number, since it uses less digits than its factorization.

1087404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90624 (or 90622 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1087404 is about 1042.7866512379. The cubic root of 1087404 is about 102.8324797569.

The spelling of 1087404 in words is "one million, eighty-seven thousand, four hundred four".