26238405 has 24 divisors (see below), whose sum is σ = 42703776. Its totient is φ = 13756960.

The previous prime is 26238397. The next prime is 26238409. The reversal of 26238405 is 50483262.

It is not a de Polignac number, because 26238405 - 2³ = 26238397 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26238409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75442 + ... + 75788.

It is an arithmetic number, because the mean of its divisors is an integer number (1779324).

Almost surely, 2^26238405 is an apocalyptic number.

It is an amenable number.

26238405 is a deficient number, since it is larger than the sum of its proper divisors (16465371).

26238405 is an equidigital number, since it uses as much as digits as its factorization.

26238405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 26238405 is about 5122.3437018615. The cubic root of 26238405 is about 297.1523326063.

The spelling of 26238405 in words is "twenty-six million, two hundred thirty-eight thousand, four hundred five".