166351240 has 32 divisors (see below), whose sum is σ = 408317760. Its totient is φ = 60491200.

The previous prime is 166351231. The next prime is 166351243. The reversal of 166351240 is 42153661.

It is a junction number, because it is equal to n+sod(n) for n = 166351199 and 166351208.

It is not an unprimeable number, because it can be changed into a prime (166351243) 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, 188596 + ... + 189475.

It is an arithmetic number, because the mean of its divisors is an integer number (12759930).

Almost surely, 2^166351240 is an apocalyptic number.

166351240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166351240 is an abundant number, since it is smaller than the sum of its proper divisors (241966520).

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

166351240 is a wasteful number, since it uses less digits than its factorization.

166351240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378093 (or 378089 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 166351240 is about 12897.7222795345. The cubic root of 166351240 is about 549.9738169354.

The spelling of 166351240 in words is "one hundred sixty-six million, three hundred fifty-one thousand, two hundred forty".