87168872 has 16 divisors (see below), whose sum is σ = 186790560. Its totient is φ = 37358064.

The previous prime is 87168871. The next prime is 87168937. The reversal of 87168872 is 27886178.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87168871) 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, 778238 + ... + 778349.

It is an arithmetic number, because the mean of its divisors is an integer number (11674410).

Almost surely, 2^87168872 is an apocalyptic number.

It is an amenable number.

87168872 is an abundant number, since it is smaller than the sum of its proper divisors (99621688).

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

87168872 is a wasteful number, since it uses less digits than its factorization.

87168872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556600 (or 1556596 counting only the distinct ones).

The product of its digits is 301056, while the sum is 47.

The square root of 87168872 is about 9336.4271538956. The cubic root of 87168872 is about 443.3912741402.

The spelling of 87168872 in words is "eighty-seven million, one hundred sixty-eight thousand, eight hundred seventy-two".