1085988 has 12 divisors (see below), whose sum is σ = 2534000. Its totient is φ = 361992.

The previous prime is 1085971. The next prime is 1085989. The reversal of 1085988 is 8895801.

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

It is a super-2 number, since 2×1085988² = 2358739872288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1085989) 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, 45238 + ... + 45261.

2^1085988 is an apocalyptic number.

It is an amenable number.

1085988 is an abundant number, since it is smaller than the sum of its proper divisors (1448012).

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

1085988 is a wasteful number, since it uses less digits than its factorization.

1085988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90506 (or 90504 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 1085988 is about 1042.1074800614. The cubic root of 1085988 is about 102.7878247679.

The spelling of 1085988 in words is "one million, eighty-five thousand, nine hundred eighty-eight".