166268928 has 104 divisors (see below), whose sum is σ = 506924608. Its totient is φ = 47480832.

The previous prime is 166268923. The next prime is 166268987. The reversal of 166268928 is 829862661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166268923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85050 + ... + 86982.

Almost surely, 2^166268928 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 166268928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253462304).

166268928 is an abundant number, since it is smaller than the sum of its proper divisors (340655680).

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

166268928 is an equidigital number, since it uses as much as digits as its factorization.

166268928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1945 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 166268928 is about 12894.5309336943. The cubic root of 166268928 is about 549.8830914050.

The spelling of 166268928 in words is "one hundred sixty-six million, two hundred sixty-eight thousand, nine hundred twenty-eight".