26197904 has 40 divisors (see below), whose sum is σ = 53032320. Its totient is φ = 12521600.

The previous prime is 26197861. The next prime is 26197921. The reversal of 26197904 is 40979162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60569 + ... + 60999.

It is an arithmetic number, because the mean of its divisors is an integer number (1325808).

Almost surely, 2^26197904 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 26197904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26516160).

26197904 is an abundant number, since it is smaller than the sum of its proper divisors (26834416).

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

26197904 is a wasteful number, since it uses less digits than its factorization.

26197904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 26197904 is about 5118.3888089906. The cubic root of 26197904 is about 296.9993613639. Note that the first 3 decimals are identical.

The spelling of 26197904 in words is "twenty-six million, one hundred ninety-seven thousand, nine hundred four".