149945228 has 12 divisors (see below), whose sum is σ = 267987552. Its totient is φ = 73377360.

The previous prime is 149945221. The next prime is 149945231. The reversal of 149945228 is 822549941.

It is not an unprimeable number, because it can be changed into a prime (149945221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398603 + ... + 398978.

It is an arithmetic number, because the mean of its divisors is an integer number (22332296).

Almost surely, 2^149945228 is an apocalyptic number.

It is an amenable number.

149945228 is a deficient number, since it is larger than the sum of its proper divisors (118042324).

149945228 is a wasteful number, since it uses less digits than its factorization.

149945228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797632 (or 797630 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 149945228 is about 12245.2124522198. The cubic root of 149945228 is about 531.2646056792.

The spelling of 149945228 in words is "one hundred forty-nine million, nine hundred forty-five thousand, two hundred twenty-eight".