149168128 has 56 divisors (see below), whose sum is σ = 302757840. Its totient is φ = 73482240.

The previous prime is 149168113. The next prime is 149168137. The reversal of 149168128 is 821861941.

It is a super-2 number, since 2×149168128² = 44502260822048768, which contains 22 as substring.

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, 1073083 + ... + 1073221.

It is an arithmetic number, because the mean of its divisors is an integer number (5406390).

Almost surely, 2^149168128 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 149168128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151378920).

149168128 is an abundant number, since it is smaller than the sum of its proper divisors (153589712).

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

149168128 is an equidigital number, since it uses as much as digits as its factorization.

149168128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 272 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 149168128 is about 12213.4404653234. The cubic root of 149168128 is about 530.3452455673.

The spelling of 149168128 in words is "one hundred forty-nine million, one hundred sixty-eight thousand, one hundred twenty-eight".