166247988 has 12 divisors (see below), whose sum is σ = 387912000. Its totient is φ = 55415992.

The previous prime is 166247969. The next prime is 166248001. The reversal of 166247988 is 889742661.

166247988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 166247988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6926988 + ... + 6927011.

It is an arithmetic number, because the mean of its divisors is an integer number (32326000).

Almost surely, 2^166247988 is an apocalyptic number.

It is an amenable number.

166247988 is an abundant number, since it is smaller than the sum of its proper divisors (221664012).

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

166247988 is a wasteful number, since it uses less digits than its factorization.

166247988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854006 (or 13854004 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 166247988 is about 12893.7189359781. The cubic root of 166247988 is about 549.8600062431.

The spelling of 166247988 in words is "one hundred sixty-six million, two hundred forty-seven thousand, nine hundred eighty-eight".