426727818 has 64 divisors (see below), whose sum is σ = 1051539840. Its totient is φ = 127180800.

The previous prime is 426727813. The next prime is 426727823. The reversal of 426727818 is 818727624.

It is an interprime number because it is at equal distance from previous prime (426727813) and next prime (426727823).

It is a super-2 number, since 2×426727818² = 364193261310082248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426727811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30346 + ... + 42122.

It is an arithmetic number, because the mean of its divisors is an integer number (16430310).

Almost surely, 2^426727818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426727818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525769920).

426727818 is an abundant number, since it is smaller than the sum of its proper divisors (624812022).

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

426727818 is a wasteful number, since it uses less digits than its factorization.

426727818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860 (or 11854 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 426727818 is about 20657.3913648360. The cubic root of 426727818 is about 752.8647873916.

The spelling of 426727818 in words is "four hundred twenty-six million, seven hundred twenty-seven thousand, eight hundred eighteen".