445257648 has 240 divisors, whose sum is σ = 1462406400. Its totient is φ = 129911040.

The previous prime is 445257583. The next prime is 445257661. The reversal of 445257648 is 846752544.

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 47 ways as a sum of consecutive naturals, for example, 1240093 + ... + 1240451.

It is an arithmetic number, because the mean of its divisors is an integer number (6093360).

Almost surely, 2^445257648 is an apocalyptic number.

445257648 is a gapful number since it is divisible by the number (48) 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 445257648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731203200).

445257648 is an abundant number, since it is smaller than the sum of its proper divisors (1017148752).

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

445257648 is a wasteful number, since it uses less digits than its factorization.

445257648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 404 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The square root of 445257648 is about 21101.1290693176. The cubic root of 445257648 is about 763.6079876283.

The spelling of 445257648 in words is "four hundred forty-five million, two hundred fifty-seven thousand, six hundred forty-eight".