26261604 has 48 divisors (see below), whose sum is σ = 69039040. Its totient is φ = 8631360.

The previous prime is 26261581. The next prime is 26261611. The reversal of 26261604 is 40616262.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6219 + ... + 9549.

Almost surely, 2^26261604 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 26261604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34519520).

26261604 is an abundant number, since it is smaller than the sum of its proper divisors (42777436).

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

26261604 is a wasteful number, since it uses less digits than its factorization.

26261604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 26261604 is about 5124.6076923019. The cubic root of 26261604 is about 297.2398837394.

Adding to 26261604 its reverse (40616262), we get a palindrome (66877866).

The spelling of 26261604 in words is "twenty-six million, two hundred sixty-one thousand, six hundred four".