12278448 has 120 divisors (see below), whose sum is σ = 42337568. Its totient is φ = 3234816.

The previous prime is 12278447. The next prime is 12278473. The reversal of 12278448 is 84487221.

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 not an unprimeable number, because it can be changed into a prime (12278443) 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 23 ways as a sum of consecutive naturals, for example, 12636 + ... + 13572.

Almost surely, 2^12278448 is an apocalyptic number.

12278448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12278448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21168784).

12278448 is an abundant number, since it is smaller than the sum of its proper divisors (30059120).

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

12278448 is a wasteful number, since it uses less digits than its factorization.

12278448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 962 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 12278448 is about 3504.0616432934. The cubic root of 12278448 is about 230.7001224857.

The spelling of 12278448 in words is "twelve million, two hundred seventy-eight thousand, four hundred forty-eight".