13212270 has 48 divisors (see below), whose sum is σ = 34839792. Its totient is φ = 3473280.

The previous prime is 13212263. The next prime is 13212289. The reversal of 13212270 is 7221231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5565 + ... + 7575.

It is an arithmetic number, because the mean of its divisors is an integer number (725829).

Almost surely, 2^13212270 is an apocalyptic number.

13212270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13212270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17419896).

13212270 is an abundant number, since it is smaller than the sum of its proper divisors (21627522).

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

13212270 is a wasteful number, since it uses less digits than its factorization.

13212270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 2094 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 13212270 is about 3634.8686358657. The cubic root of 13212270 is about 236.4063548843.

The spelling of 13212270 in words is "thirteen million, two hundred twelve thousand, two hundred seventy".