12271896 has 96 divisors (see below), whose sum is σ = 40928160. Its totient is φ = 3234816.

The previous prime is 12271879. The next prime is 12271951. The reversal of 12271896 is 69817221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12271896.

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, 5616 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (426335).

Almost surely, 2^12271896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12271896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20464080).

12271896 is an abundant number, since it is smaller than the sum of its proper divisors (28656264).

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

12271896 is a wasteful number, since it uses less digits than its factorization.

12271896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1898 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12271896 is about 3503.1266034787. The cubic root of 12271896 is about 230.6590799440.

The spelling of 12271896 in words is "twelve million, two hundred seventy-one thousand, eight hundred ninety-six".