921448 has 32 divisors (see below), whose sum is σ = 1942560. Its totient is φ = 406080.

The previous prime is 921409. The next prime is 921457. The reversal of 921448 is 844129.

921448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3115 + ... + 3397.

It is an arithmetic number, because the mean of its divisors is an integer number (60705).

2⁹²¹⁴⁴⁸ 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 921448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971280).

921448 is an abundant number, since it is smaller than the sum of its proper divisors (1021112).

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

921448 is a wasteful number, since it uses less digits than its factorization.

921448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 333 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 921448 is about 959.9208300688. The cubic root of 921448 is about 97.3098815499.

It can be divided in two parts, 921 and 448, that added together give a square (1369 = 37²).

The spelling of 921448 in words is "nine hundred twenty-one thousand, four hundred forty-eight".