26692257240 has 192 divisors, whose sum is σ = 98141621760. Its totient is φ = 6470824320.

The previous prime is 26692257223. The next prime is 26692257247. The reversal of 26692257240 is 4275229662.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26692257247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17904 + ... + 231743.

It is an arithmetic number, because the mean of its divisors is an integer number (511154280).

Almost surely, 2^26692257240 is an apocalyptic number.

26692257240 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 26692257240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49070810880).

26692257240 is an abundant number, since it is smaller than the sum of its proper divisors (71449364520).

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

26692257240 is a wasteful number, since it uses less digits than its factorization.

26692257240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249684 (or 249668 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 26692257240 in words is "twenty-six billion, six hundred ninety-two million, two hundred fifty-seven thousand, two hundred forty".