11227890 has 32 divisors (see below), whose sum is σ = 27818496. Its totient is φ = 2897280.

The previous prime is 11227889. The next prime is 11227897. The reversal of 11227890 is 9872211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11227897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5107 + ... + 6966.

It is an arithmetic number, because the mean of its divisors is an integer number (869328).

Almost surely, 2^11227890 is an apocalyptic number.

11227890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11227890 is an abundant number, since it is smaller than the sum of its proper divisors (16590606).

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

11227890 is a wasteful number, since it uses less digits than its factorization.

11227890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12114.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 11227890 is about 3350.8043810405. The cubic root of 11227890 is about 223.9233501562.

The spelling of 11227890 in words is "eleven million, two hundred twenty-seven thousand, eight hundred ninety".