166153240 has 128 divisors (see below), whose sum is σ = 438177600. Its totient is φ = 56033280.

The previous prime is 166153237. The next prime is 166153241. The reversal of 166153240 is 42351661.

It is a junction number, because it is equal to n+sod(n) for n = 166153199 and 166153208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166153241) 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, 725446 + ... + 725674.

Almost surely, 2^166153240 is an apocalyptic number.

166153240 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 166153240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219088800).

166153240 is an abundant number, since it is smaller than the sum of its proper divisors (272024360).

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

166153240 is a wasteful number, since it uses less digits than its factorization.

166153240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 361 counting only the distinct ones).

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

The square root of 166153240 is about 12890.0442202500. The cubic root of 166153240 is about 549.7555277130.

The spelling of 166153240 in words is "one hundred sixty-six million, one hundred fifty-three thousand, two hundred forty".