166205452 has 72 divisors (see below), whose sum is σ = 356132000. Its totient is φ = 67836384.

The previous prime is 166205441. The next prime is 166205491. The reversal of 166205452 is 254502661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 725674 + ... + 725902.

Almost surely, 2^166205452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166205452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178066000).

166205452 is an abundant number, since it is smaller than the sum of its proper divisors (189926548).

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

166205452 is a wasteful number, since it uses less digits than its factorization.

166205452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 166205452 is about 12892.0693451439. The cubic root of 166205452 is about 549.8131067477.

The spelling of 166205452 in words is "one hundred sixty-six million, two hundred five thousand, four hundred fifty-two".