442582801920 has 1440 divisors, whose sum is σ = 1921184179200. Its totient is φ = 93584719872.

The previous prime is 442582801897. The next prime is 442582801933. The reversal of 442582801920 is 29108285244.

442582801920 is a `hidden beast` number, since 4 + 42 + 582 + 8 + 0 + 1 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1008161061 + ... + 1008161499.

It is an arithmetic number, because the mean of its divisors is an integer number (1334155680).

Almost surely, 2^442582801920 is an apocalyptic number.

442582801920 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 442582801920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960592089600).

442582801920 is an abundant number, since it is smaller than the sum of its proper divisors (1478601377280).

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

442582801920 is a wasteful number, since it uses less digits than its factorization.

442582801920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 442582801920 in words is "four hundred forty-two billion, five hundred eighty-two million, eight hundred one thousand, nine hundred twenty".