26169840 has 120 divisors (see below), whose sum is σ = 92561040. Its totient is φ = 6607872.

The previous prime is 26169833. The next prime is 26169887. The reversal of 26169840 is 4896162.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 26169795 and 26169804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12724 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (771342).

Almost surely, 2^26169840 is an apocalyptic number.

26169840 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 26169840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46280520).

26169840 is an abundant number, since it is smaller than the sum of its proper divisors (66391200).

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

26169840 is a wasteful number, since it uses less digits than its factorization.

26169840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26169840 is about 5115.6465866985. The cubic root of 26169840 is about 296.8932718578.

The spelling of 26169840 in words is "twenty-six million, one hundred sixty-nine thousand, eight hundred forty".