166047992 has 64 divisors (see below), whose sum is σ = 365299200. Its totient is φ = 69949440.

The previous prime is 166047979. The next prime is 166048009. The reversal of 166047992 is 299740661.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77528 + ... + 79640.

It is an arithmetic number, because the mean of its divisors is an integer number (5707800).

Almost surely, 2^166047992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166047992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182649600).

166047992 is an abundant number, since it is smaller than the sum of its proper divisors (199251208).

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

166047992 is a wasteful number, since it uses less digits than its factorization.

166047992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196 (or 2192 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 166047992 is about 12885.9610429335. The cubic root of 166047992 is about 549.6394242671.

The spelling of 166047992 in words is "one hundred sixty-six million, forty-seven thousand, nine hundred ninety-two".