442902680 has 64 divisors (see below), whose sum is σ = 1102096800. Its totient is φ = 158837760.

The previous prime is 442902661. The next prime is 442902701. The reversal of 442902680 is 86209244.

It is a self number, because there is not a number n which added to its sum of digits gives 442902680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25226 + ... + 39014.

Almost surely, 2^442902680 is an apocalyptic number.

442902680 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 442902680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551048400).

442902680 is an abundant number, since it is smaller than the sum of its proper divisors (659194120).

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

442902680 is a wasteful number, since it uses less digits than its factorization.

442902680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13884 (or 13880 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 442902680 is about 21045.2531464936. The cubic root of 442902680 is about 762.2593661529.

The spelling of 442902680 in words is "four hundred forty-two million, nine hundred two thousand, six hundred eighty".