145232224 has 24 divisors (see below), whose sum is σ = 302746248. Its totient is φ = 68344320.

The previous prime is 145232221. The next prime is 145232239. The reversal of 145232224 is 422232541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145232221) 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, 132942 + ... + 134029.

It is an arithmetic number, because the mean of its divisors is an integer number (12614427).

Almost surely, 2^145232224 is an apocalyptic number.

It is an amenable number.

145232224 is an abundant number, since it is smaller than the sum of its proper divisors (157514024).

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

145232224 is a wasteful number, since it uses less digits than its factorization.

145232224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266998 (or 266990 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 145232224 is about 12051.2332978828. The cubic root of 145232224 is about 525.6390995411.

Adding to 145232224 its reverse (422232541), we get a palindrome (567464765).

The spelling of 145232224 in words is "one hundred forty-five million, two hundred thirty-two thousand, two hundred twenty-four".