145961228 has 12 divisors (see below), whose sum is σ = 291922512. Its totient is φ = 62554800.

The previous prime is 145961209. The next prime is 145961239. The reversal of 145961228 is 822169541.

145961228 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 145961191 and 145961200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2606423 + ... + 2606478.

It is an arithmetic number, because the mean of its divisors is an integer number (24326876).

Almost surely, 2^145961228 is an apocalyptic number.

It is an amenable number.

145961228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145961228 is a wasteful number, since it uses less digits than its factorization.

145961228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212912 (or 5212910 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 145961228 is about 12081.4414702882. The cubic root of 145961228 is about 526.5171269794.

The spelling of 145961228 in words is "one hundred forty-five million, nine hundred sixty-one thousand, two hundred twenty-eight".