426444840 has 96 divisors (see below), whose sum is σ = 1446232320. Its totient is φ = 108772224.

The previous prime is 426444829. The next prime is 426444853. The reversal of 426444840 is 48444624.

426444840 is a `hidden beast` number, since 4 + 2 + 644 + 4 + 8 + 4 + 0 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 426444795 and 426444804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17472 + ... + 34031.

It is an arithmetic number, because the mean of its divisors is an integer number (15064920).

Almost surely, 2^426444840 is an apocalyptic number.

426444840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426444840 is an abundant number, since it is smaller than the sum of its proper divisors (1019787480).

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

426444840 is a wasteful number, since it uses less digits than its factorization.

426444840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51543 (or 51536 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

The square root of 426444840 is about 20650.5409130124. The cubic root of 426444840 is about 752.6983336847.

The spelling of 426444840 in words is "four hundred twenty-six million, four hundred forty-four thousand, eight hundred forty".