1172787448 has 32 divisors (see below), whose sum is σ = 2515500000. Its totient is φ = 502146432.

The previous prime is 1172787439. The next prime is 1172787479. The reversal of 1172787448 is 8447872711.

It is a happy number.

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

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, 53178 + ... + 71926.

It is an arithmetic number, because the mean of its divisors is an integer number (78609375).

Almost surely, 2^1172787448 is an apocalyptic number.

It is an amenable number.

1172787448 is an abundant number, since it is smaller than the sum of its proper divisors (1342712552).

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

1172787448 is a wasteful number, since it uses less digits than its factorization.

1172787448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19879 (or 19875 counting only the distinct ones).

The product of its digits is 702464, while the sum is 49.

The square root of 1172787448 is about 34245.9844069345. The cubic root of 1172787448 is about 1054.5643920878.

The spelling of 1172787448 in words is "one billion, one hundred seventy-two million, seven hundred eighty-seven thousand, four hundred forty-eight".