1171023972 has 48 divisors (see below), whose sum is σ = 2762612160. Its totient is φ = 386039808.

The previous prime is 1171023961. The next prime is 1171023991. The reversal of 1171023972 is 2793201711.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1042203 + ... + 1043325.

It is an arithmetic number, because the mean of its divisors is an integer number (57554420).

Almost surely, 2^1171023972 is an apocalyptic number.

1171023972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1171023972 is an abundant number, since it is smaller than the sum of its proper divisors (1591588188).

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

1171023972 is a wasteful number, since it uses less digits than its factorization.

1171023972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 1171023972 is about 34220.2275270051. The cubic root of 1171023972 is about 1054.0355574445.

The spelling of 1171023972 in words is "one billion, one hundred seventy-one million, twenty-three thousand, nine hundred seventy-two".