1172278880 has 24 divisors (see below), whose sum is σ = 2769509232. Its totient is φ = 468911488.

The previous prime is 1172278819. The next prime is 1172278883. The reversal of 1172278880 is 888722711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172278883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3663212 + ... + 3663531.

It is an arithmetic number, because the mean of its divisors is an integer number (115396218).

Almost surely, 2^1172278880 is an apocalyptic number.

1172278880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172278880 is an abundant number, since it is smaller than the sum of its proper divisors (1597230352).

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

1172278880 is an equidigital number, since it uses as much as digits as its factorization.

1172278880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326758 (or 7326750 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 44.

The square root of 1172278880 is about 34238.5583808664. The cubic root of 1172278880 is about 1054.4119361458.

The spelling of 1172278880 in words is "one billion, one hundred seventy-two million, two hundred seventy-eight thousand, eight hundred eighty".