745448 has 32 divisors (see below), whose sum is σ = 1568160. Its totient is φ = 329280.

The previous prime is 745397. The next prime is 745471. The reversal of 745448 is 844547.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3686 + ... + 3882.

It is an arithmetic number, because the mean of its divisors is an integer number (49005).

2⁷⁴⁵⁴⁴⁸ 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 745448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784080).

745448 is an abundant number, since it is smaller than the sum of its proper divisors (822712).

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

745448 is a wasteful number, since it uses less digits than its factorization.

745448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 253 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 745448 is about 863.3933055103. The cubic root of 745448 is about 90.6718446678.

Subtracting 745448 from its reverse (844547), we obtain a palindrome (99099).

The spelling of 745448 in words is "seven hundred forty-five thousand, four hundred forty-eight".