26097940 has 48 divisors (see below), whose sum is σ = 60137280. Its totient is φ = 9434880.

The previous prime is 26097937. The next prime is 26097943. The reversal of 26097940 is 4979062.

It is an interprime number because it is at equal distance from previous prime (26097937) and next prime (26097943).

It is a super-2 number, since 2×26097940² = 1362204944487200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26097940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26097943) 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 15 ways as a sum of consecutive naturals, for example, 68671 + ... + 69049.

It is an arithmetic number, because the mean of its divisors is an integer number (1252860).

Almost surely, 2^26097940 is an apocalyptic number.

26097940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26097940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30068640).

26097940 is an abundant number, since it is smaller than the sum of its proper divisors (34039340).

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

26097940 is a wasteful number, since it uses less digits than its factorization.

26097940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 26097940 is about 5108.6142935242. The cubic root of 26097940 is about 296.6211238986.

The spelling of 26097940 in words is "twenty-six million, ninety-seven thousand, nine hundred forty".