26859840 has 168 divisors, whose sum is σ = 99376992. Its totient is φ = 6128640.

The previous prime is 26859827. The next prime is 26859851. The reversal of 26859840 is 4895862.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 26859792 and 26859801.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 46755 + ... + 47325.

Almost surely, 2^26859840 is an apocalyptic number.

26859840 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 26859840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49688496).

26859840 is an abundant number, since it is smaller than the sum of its proper divisors (72517152).

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

26859840 is a wasteful number, since it uses less digits than its factorization.

26859840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 26859840 is about 5182.6479718383. The cubic root of 26859840 is about 299.4799880349.

The spelling of 26859840 in words is "twenty-six million, eight hundred fifty-nine thousand, eight hundred forty".