145445328 has 120 divisors (see below), whose sum is σ = 485712960. Its totient is φ = 41549760.

The previous prime is 145445309. The next prime is 145445329. The reversal of 145445328 is 823544541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 145445292 and 145445301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145445329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17733 + ... + 24603.

It is an arithmetic number, because the mean of its divisors is an integer number (4047608).

Almost surely, 2^145445328 is an apocalyptic number.

145445328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145445328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242856480).

145445328 is an abundant number, since it is smaller than the sum of its proper divisors (340267632).

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

145445328 is a wasteful number, since it uses less digits than its factorization.

145445328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902 (or 6883 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 145445328 is about 12060.0716415783. The cubic root of 145445328 is about 525.8960697186.

Adding to 145445328 its reverse (823544541), we get a palindrome (968989869).

The spelling of 145445328 in words is "one hundred forty-five million, four hundred forty-five thousand, three hundred twenty-eight".