145673228 has 12 divisors (see below), whose sum is σ = 268345560. Its totient is φ = 69003072.

The previous prime is 145673201. The next prime is 145673249. The reversal of 145673228 is 822376541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 145673191 and 145673200.

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, 958301 + ... + 958452.

It is an arithmetic number, because the mean of its divisors is an integer number (22362130).

Almost surely, 2^145673228 is an apocalyptic number.

It is an amenable number.

145673228 is a deficient number, since it is larger than the sum of its proper divisors (122672332).

145673228 is a wasteful number, since it uses less digits than its factorization.

145673228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916776 (or 1916774 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 145673228 is about 12069.5164774733. The cubic root of 145673228 is about 526.1706039630.

The spelling of 145673228 in words is "one hundred forty-five million, six hundred seventy-three thousand, two hundred twenty-eight".