12191648 has 48 divisors (see below), whose sum is σ = 28191744. Its totient is φ = 5080320.

The previous prime is 12191593. The next prime is 12191651. The reversal of 12191648 is 84619121.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7553 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (587328).

Almost surely, 2^12191648 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 12191648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14095872).

12191648 is an abundant number, since it is smaller than the sum of its proper divisors (16000096).

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

12191648 is a wasteful number, since it uses less digits than its factorization.

12191648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525 (or 1517 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 12191648 is about 3491.6540493010. The cubic root of 12191648 is about 230.1552071498.

The spelling of 12191648 in words is "twelve million, one hundred ninety-one thousand, six hundred forty-eight".