145012446 has 48 divisors (see below), whose sum is σ = 332841600. Its totient is φ = 45501264.

The previous prime is 145012429. The next prime is 145012453. The reversal of 145012446 is 644210541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55845 + ... + 58383.

It is an arithmetic number, because the mean of its divisors is an integer number (6934200).

Almost surely, 2^145012446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145012446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166420800).

145012446 is an abundant number, since it is smaller than the sum of its proper divisors (187829154).

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

145012446 is a wasteful number, since it uses less digits than its factorization.

145012446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 145012446 is about 12042.1113597243. Note that the first 3 decimals coincide. The cubic root of 145012446 is about 525.3738181192.

Adding to 145012446 its reverse (644210541), we get a palindrome (789222987).

The spelling of 145012446 in words is "one hundred forty-five million, twelve thousand, four hundred forty-six".