166028880 has 40 divisors (see below), whose sum is σ = 514690272. Its totient is φ = 44274304.

The previous prime is 166028873. The next prime is 166028887. The reversal of 166028880 is 88820661.

It is an interprime number because it is at equal distance from previous prime (166028873) and next prime (166028887).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166028887) 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 7 ways as a sum of consecutive naturals, for example, 345654 + ... + 346133.

Almost surely, 2^166028880 is an apocalyptic number.

166028880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166028880 is an abundant number, since it is smaller than the sum of its proper divisors (348661392).

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

166028880 is a wasteful number, since it uses less digits than its factorization.

166028880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691803 (or 691797 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 166028880 is about 12885.2194393421. The cubic root of 166028880 is about 549.6183357621.

The spelling of 166028880 in words is "one hundred sixty-six million, twenty-eight thousand, eight hundred eighty".