26293890 has 96 divisors (see below), whose sum is σ = 75907584. Its totient is φ = 5806080.

The previous prime is 26293877. The next prime is 26293913. The reversal of 26293890 is 9839262.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45282 + ... + 45858.

It is an arithmetic number, because the mean of its divisors is an integer number (790704).

Almost surely, 2^26293890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26293890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37953792).

26293890 is an abundant number, since it is smaller than the sum of its proper divisors (49613694).

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

26293890 is a wasteful number, since it uses less digits than its factorization.

26293890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 26293890 is about 5127.7568195069. The cubic root of 26293890 is about 297.3616427004.

The spelling of 26293890 in words is "twenty-six million, two hundred ninety-three thousand, eight hundred ninety".