26899040 has 144 divisors (see below), whose sum is σ = 76531392. Its totient is φ = 8902656.

The previous prime is 26899031. The next prime is 26899043. The reversal of 26899040 is 4099862.

It is a junction number, because it is equal to n+sod(n) for n = 26898985 and 26899003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26899043) 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 23 ways as a sum of consecutive naturals, for example, 368444 + ... + 368516.

It is an arithmetic number, because the mean of its divisors is an integer number (531468).

Almost surely, 2^26899040 is an apocalyptic number.

26899040 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 26899040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38265696).

26899040 is an abundant number, since it is smaller than the sum of its proper divisors (49632352).

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

26899040 is a wasteful number, since it uses less digits than its factorization.

26899040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 26899040 is about 5186.4284435438. The cubic root of 26899040 is about 299.6256070348.

The spelling of 26899040 in words is "twenty-six million, eight hundred ninety-nine thousand, forty".