117891472 has 40 divisors (see below), whose sum is σ = 237121976. Its totient is φ = 56733696.

The previous prime is 117891469. The next prime is 117891493. The reversal of 117891472 is 274198711.

It can be written as a sum of positive squares in 4 ways, for example, as 37896336 + 79995136 = 6156^2 + 8944^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56398 + ... + 58450.

Almost surely, 2^117891472 is an apocalyptic number.

It is an amenable number.

117891472 is an abundant number, since it is smaller than the sum of its proper divisors (119230504).

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

117891472 is a wasteful number, since it uses less digits than its factorization.

117891472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2189 counting only the distinct ones).

The product of its digits is 28224, while the sum is 40.

The square root of 117891472 is about 10857.7839359604. The cubic root of 117891472 is about 490.3363954102.

The spelling of 117891472 in words is "one hundred seventeen million, eight hundred ninety-one thousand, four hundred seventy-two".