145187444 has 12 divisors (see below), whose sum is σ = 256453344. Its totient is φ = 71915064.

The previous prime is 145187443. The next prime is 145187453. The reversal of 145187444 is 444781541.

It is a junction number, because it is equal to n+sod(n) for n = 145187398 and 145187407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145187443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169184 + ... + 170039.

It is an arithmetic number, because the mean of its divisors is an integer number (21371112).

Almost surely, 2^145187444 is an apocalyptic number.

It is an amenable number.

145187444 is a deficient number, since it is larger than the sum of its proper divisors (111265900).

145187444 is a wasteful number, since it uses less digits than its factorization.

145187444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339334 (or 339332 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 145187444 is about 12049.3752535142. The cubic root of 145187444 is about 525.5850698915.

The spelling of 145187444 in words is "one hundred forty-five million, one hundred eighty-seven thousand, four hundred forty-four".