12235890 has 32 divisors (see below), whose sum is σ = 29520576. Its totient is φ = 3245760.

The previous prime is 12235889. The next prime is 12235891. The reversal of 12235890 is 9853221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12235889) and next prime (12235891).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12235891) 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, 5364 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (922518).

Almost surely, 2^12235890 is an apocalyptic number.

12235890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12235890 is an abundant number, since it is smaller than the sum of its proper divisors (17284686).

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

12235890 is a wasteful number, since it uses less digits than its factorization.

12235890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 12235890 is about 3497.9837049363. The cubic root of 12235890 is about 230.4332727676.

The spelling of 12235890 in words is "twelve million, two hundred thirty-five thousand, eight hundred ninety".