145446144 has 72 divisors (see below), whose sum is σ = 389259360. Its totient is φ = 48211968.

The previous prime is 145446139. The next prime is 145446157. The reversal of 145446144 is 441644541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175459 + ... + 176285.

It is an arithmetic number, because the mean of its divisors is an integer number (5406380).

Almost surely, 2^145446144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145446144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194629680).

145446144 is an abundant number, since it is smaller than the sum of its proper divisors (243813216).

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

145446144 is an equidigital number, since it uses as much as digits as its factorization.

145446144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1061 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 145446144 is about 12060.1054721756. The cubic root of 145446144 is about 525.8970532047.

The spelling of 145446144 in words is "one hundred forty-five million, four hundred forty-six thousand, one hundred forty-four".