187117092 has 72 divisors (see below), whose sum is σ = 505028160. Its totient is φ = 58242240.

The previous prime is 187117087. The next prime is 187117127. The reversal of 187117092 is 290711781.

It is a super-2 number, since 2×187117092² = 70025612237072928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 46638 + ... + 50490.

It is an arithmetic number, because the mean of its divisors is an integer number (7014280).

Almost surely, 2^187117092 is an apocalyptic number.

187117092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187117092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252514080).

187117092 is an abundant number, since it is smaller than the sum of its proper divisors (317911068).

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

187117092 is a wasteful number, since it uses less digits than its factorization.

187117092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3948 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 187117092 is about 13679.0749687250. The cubic root of 187117092 is about 571.9672377603.

The spelling of 187117092 in words is "one hundred eighty-seven million, one hundred seventeen thousand, ninety-two".