145609228 has 12 divisors (see below), whose sum is σ = 265895280. Its totient is φ = 69639152.

The previous prime is 145609213. The next prime is 145609249. The reversal of 145609228 is 822906541.

145609228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 791263 + ... + 791446.

It is an arithmetic number, because the mean of its divisors is an integer number (22157940).

Almost surely, 2^145609228 is an apocalyptic number.

It is an amenable number.

145609228 is a deficient number, since it is larger than the sum of its proper divisors (120286052).

145609228 is a wasteful number, since it uses less digits than its factorization.

145609228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582736 (or 1582734 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 145609228 is about 12066.8648786667. The cubic root of 145609228 is about 526.0935368362.

The spelling of 145609228 in words is "one hundred forty-five million, six hundred nine thousand, two hundred twenty-eight".