166437040 has 160 divisors (see below), whose sum is σ = 494968320. Its totient is φ = 50534400.

The previous prime is 166437001. The next prime is 166437049. The reversal of 166437040 is 40734661.

It is a junction number, because it is equal to n+sod(n) for n = 166436993 and 166437011.

It is not an unprimeable number, because it can be changed into a prime (166437049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252231 + ... + 252889.

It is an arithmetic number, because the mean of its divisors is an integer number (3093552).

Almost surely, 2^166437040 is an apocalyptic number.

166437040 is a gapful number since it is divisible by the number (10) 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 166437040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247484160).

166437040 is an abundant number, since it is smaller than the sum of its proper divisors (328531280).

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

166437040 is a wasteful number, since it uses less digits than its factorization.

166437040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 166437040 is about 12901.0480194440. The cubic root of 166437040 is about 550.0683551407.

The spelling of 166437040 in words is "one hundred sixty-six million, four hundred thirty-seven thousand, forty".