426307686 has 64 divisors (see below), whose sum is σ = 1002585600. Its totient is φ = 118331136.

The previous prime is 426307649. The next prime is 426307699. The reversal of 426307686 is 686703624.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219576 + ... + 221508.

It is an arithmetic number, because the mean of its divisors is an integer number (15665400).

Almost surely, 2^426307686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426307686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501292800).

426307686 is an abundant number, since it is smaller than the sum of its proper divisors (576277914).

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

426307686 is a wasteful number, since it uses less digits than its factorization.

426307686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 426307686 is about 20647.2198128465. The cubic root of 426307686 is about 752.6176302758.

The spelling of 426307686 in words is "four hundred twenty-six million, three hundred seven thousand, six hundred eighty-six".