166192420 has 24 divisors (see below), whose sum is σ = 357122304. Its totient is φ = 64930656.

The previous prime is 166192387. The next prime is 166192421. The reversal of 166192420 is 24291661.

It is not an unprimeable number, because it can be changed into a prime (166192421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95764 + ... + 97483.

It is an arithmetic number, because the mean of its divisors is an integer number (14880096).

Almost surely, 2^166192420 is an apocalyptic number.

166192420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166192420 is an abundant number, since it is smaller than the sum of its proper divisors (190929884).

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

166192420 is a wasteful number, since it uses less digits than its factorization.

166192420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193299 (or 193297 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 166192420 is about 12891.5639082308. The cubic root of 166192420 is about 549.7987362771.

The spelling of 166192420 in words is "one hundred sixty-six million, one hundred ninety-two thousand, four hundred twenty".