26315604 has 120 divisors (see below), whose sum is σ = 80824128. Its totient is φ = 7309440.

The previous prime is 26315603. The next prime is 26315617. The reversal of 26315604 is 40651362.

26315604 is a `hidden beast` number, since 26 + 31 + 5 + 604 = 666.

It is a super-2 number, since 2×26315604² = 1385022027769632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26315603) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 92847 + ... + 93129.

Almost surely, 2^26315604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26315604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40412064).

26315604 is an abundant number, since it is smaller than the sum of its proper divisors (54508524).

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

26315604 is a wasteful number, since it uses less digits than its factorization.

26315604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 26315604 is about 5129.8736826554. The cubic root of 26315604 is about 297.4434758323.

Adding to 26315604 its reverse (40651362), we get a palindrome (66966966).

The spelling of 26315604 in words is "twenty-six million, three hundred fifteen thousand, six hundred four".