166254440 has 32 divisors (see below), whose sum is σ = 408080160. Its totient is φ = 60456000.

The previous prime is 166254433. The next prime is 166254449. The reversal of 166254440 is 44452661.

It is a junction number, because it is equal to n+sod(n) for n = 166254397 and 166254406.

It is not an unprimeable number, because it can be changed into a prime (166254449) 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, 188486 + ... + 189365.

It is an arithmetic number, because the mean of its divisors is an integer number (12752505).

Almost surely, 2^166254440 is an apocalyptic number.

166254440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166254440 is an abundant number, since it is smaller than the sum of its proper divisors (241825720).

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

166254440 is a wasteful number, since it uses less digits than its factorization.

166254440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377873 (or 377869 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 166254440 is about 12893.9691328931. The cubic root of 166254440 is about 549.8671194136.

The spelling of 166254440 in words is "one hundred sixty-six million, two hundred fifty-four thousand, four hundred forty".