166139288 has 16 divisors (see below), whose sum is σ = 356012880. Its totient is φ = 71202528.

The previous prime is 166139273. The next prime is 166139299. The reversal of 166139288 is 882931661.

166139288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483331 + ... + 1483442.

It is an arithmetic number, because the mean of its divisors is an integer number (22250805).

Almost surely, 2^166139288 is an apocalyptic number.

It is an amenable number.

166139288 is an abundant number, since it is smaller than the sum of its proper divisors (189873592).

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

166139288 is a wasteful number, since it uses less digits than its factorization.

166139288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966786 (or 2966782 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 166139288 is about 12889.5030160204. The cubic root of 166139288 is about 549.7401395011.

The spelling of 166139288 in words is "one hundred sixty-six million, one hundred thirty-nine thousand, two hundred eighty-eight".