1448321904 has 80 divisors (see below), whose sum is σ = 4194151200. Its totient is φ = 478485504.

The previous prime is 1448321899. The next prime is 1448321909. The reversal of 1448321904 is 4091238441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1448321899) and next prime (1448321909).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448321909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33982 + ... + 63650.

It is an arithmetic number, because the mean of its divisors is an integer number (52426890).

Almost surely, 2^1448321904 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 1448321904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2097075600).

1448321904 is an abundant number, since it is smaller than the sum of its proper divisors (2745829296).

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

1448321904 is a wasteful number, since it uses less digits than its factorization.

1448321904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29799 (or 29787 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1448321904 is about 38056.8246704845. The cubic root of 1448321904 is about 1131.4143940897.

The spelling of 1448321904 in words is "one billion, four hundred forty-eight million, three hundred twenty-one thousand, nine hundred four".