166204992 has 112 divisors (see below), whose sum is σ = 467148672. Its totient is φ = 52039680.

The previous prime is 166204991. The next prime is 166204993. The reversal of 166204992 is 299402661.

It is an interprime number because it is at equal distance from previous prime (166204991) and next prime (166204993).

It is a self number, because there is not a number n which added to its sum of digits gives 166204992.

It is not an unprimeable number, because it can be changed into a prime (166204991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269068 + ... + 269684.

Almost surely, 2^166204992 is an apocalyptic number.

166204992 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 166204992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233574336).

166204992 is an abundant number, since it is smaller than the sum of its proper divisors (300943680).

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

166204992 is a wasteful number, since it uses less digits than its factorization.

166204992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 166204992 is about 12892.0515047063. The cubic root of 166204992 is about 549.8125995155.

It can be divided in two parts, 16620 and 4992, that added together give a palindrome (21612).

The spelling of 166204992 in words is "one hundred sixty-six million, two hundred four thousand, nine hundred ninety-two".