331744448 has 56 divisors (see below), whose sum is σ = 770741664. Its totient is φ = 138700800.

The previous prime is 331744421. The next prime is 331744451. The reversal of 331744448 is 844447133.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×331744448² = 220108757557649408, which contains 22 as substring.

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, 9338 + ... + 27398.

It is an arithmetic number, because the mean of its divisors is an integer number (13763244).

Almost surely, 2^331744448 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 331744448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385370832).

331744448 is an abundant number, since it is smaller than the sum of its proper divisors (438997216).

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

331744448 is a wasteful number, since it uses less digits than its factorization.

331744448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18121 (or 18111 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 331744448 is about 18213.8531892623. The cubic root of 331744448 is about 692.2578477112.

The spelling of 331744448 in words is "three hundred thirty-one million, seven hundred forty-four thousand, four hundred forty-eight".