1171278448 has 80 divisors (see below), whose sum is σ = 2404533600. Its totient is φ = 551936000.

The previous prime is 1171278431. The next prime is 1171278457. The reversal of 1171278448 is 8448721711.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4666323 + ... + 4666573.

It is an arithmetic number, because the mean of its divisors is an integer number (30056670).

Almost surely, 2^1171278448 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 1171278448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202266800).

1171278448 is an abundant number, since it is smaller than the sum of its proper divisors (1233255152).

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

1171278448 is a wasteful number, since it uses less digits than its factorization.

1171278448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 484 counting only the distinct ones).

The product of its digits is 100352, while the sum is 43.

The square root of 1171278448 is about 34223.9455352535. The cubic root of 1171278448 is about 1054.1119029711. Note that the first 3 decimals are identical.

The spelling of 1171278448 in words is "one billion, one hundred seventy-one million, two hundred seventy-eight thousand, four hundred forty-eight".