11289285 has 24 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 5160672.

The previous prime is 11289277. The next prime is 11289347. The reversal of 11289285 is 58298211.

It is not a de Polignac number, because 11289285 - 2³ = 11289277 is a prime.

It is a super-2 number, since 2×11289285² = 254895911622450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17605 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (931840).

Almost surely, 2^11289285 is an apocalyptic number.

11289285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11289285 is a deficient number, since it is larger than the sum of its proper divisors (11074875).

11289285 is a wasteful number, since it uses less digits than its factorization.

11289285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35857 (or 35854 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 11289285 is about 3359.9531246730. The cubic root of 11289285 is about 224.3307520798.

The spelling of 11289285 in words is "eleven million, two hundred eighty-nine thousand, two hundred eighty-five".