442452276 has 144 divisors (see below), whose sum is σ = 1316165760. Its totient is φ = 122722560.

The previous prime is 442452271. The next prime is 442452277. The reversal of 442452276 is 672254244.

442452276 is a `hidden beast` number, since 4 + 424 + 5 + 227 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 442452276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442452271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1644670 + ... + 1644938.

It is an arithmetic number, because the mean of its divisors is an integer number (9140040).

Almost surely, 2^442452276 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 442452276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658082880).

442452276 is an abundant number, since it is smaller than the sum of its proper divisors (873713484).

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

442452276 is a wasteful number, since it uses less digits than its factorization.

442452276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 449 counting only the distinct ones).

The product of its digits is 107520, while the sum is 36.

The square root of 442452276 is about 21034.5495792042. The cubic root of 442452276 is about 762.0008886674. Note that the first 3 decimals are identical.

The spelling of 442452276 in words is "four hundred forty-two million, four hundred fifty-two thousand, two hundred seventy-six".