442448622280 has 96 divisors (see below), whose sum is σ = 1158307932600. Its totient is φ = 151661776896.

The previous prime is 442448622233. The next prime is 442448622313. The reversal of 442448622280 is 82226844244.

It can be written as a sum of positive squares in 4 ways, for example, as 91200376036 + 351248246244 = 301994^2 + 592662^2 .

It is a super-2 number, since 2×442448622280² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442448622280.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9362872 + ... + 9410008.

Almost surely, 2^442448622280 is an apocalyptic number.

442448622280 is a gapful number since it is divisible by the number (40) 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 442448622280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579153966300).

442448622280 is an abundant number, since it is smaller than the sum of its proper divisors (715859310320).

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

442448622280 is a wasteful number, since it uses less digits than its factorization.

442448622280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51951 (or 51940 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 46.

The spelling of 442448622280 in words is "four hundred forty-two billion, four hundred forty-eight million, six hundred twenty-two thousand, two hundred eighty".