26430426 has 48 divisors (see below), whose sum is σ = 64640160. Its totient is φ = 7731360.

The previous prime is 26430409. The next prime is 26430431. The reversal of 26430426 is 62403462.

It is a self number, because there is not a number n which added to its sum of digits gives 26430426.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3441 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (1346670).

Almost surely, 2^26430426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26430426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32320080).

26430426 is an abundant number, since it is smaller than the sum of its proper divisors (38209734).

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

26430426 is a wasteful number, since it uses less digits than its factorization.

26430426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651 (or 4648 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 26430426 is about 5141.0530049786. The cubic root of 26430426 is about 297.8754565674.

Adding to 26430426 its reverse (62403462), we get a palindrome (88833888).

The spelling of 26430426 in words is "twenty-six million, four hundred thirty thousand, four hundred twenty-six".