26308920 has 128 divisors (see below), whose sum is σ = 90720000. Its totient is φ = 6036480.

The previous prime is 26308907. The next prime is 26308943. The reversal of 26308920 is 2980362.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 24556 + ... + 25604.

It is an arithmetic number, because the mean of its divisors is an integer number (708750).

Almost surely, 2^26308920 is an apocalyptic number.

26308920 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 26308920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45360000).

26308920 is an abundant number, since it is smaller than the sum of its proper divisors (64411080).

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

26308920 is a wasteful number, since it uses less digits than its factorization.

26308920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 26308920 is about 5129.2221632524. Note that the first 3 decimals coincide. The cubic root of 26308920 is about 297.4182907680.

The spelling of 26308920 in words is "twenty-six million, three hundred eight thousand, nine hundred twenty".