26789440 has 28 divisors (see below), whose sum is σ = 63793116. Its totient is φ = 10715648.

The previous prime is 26789437. The next prime is 26789459. The reversal of 26789440 is 4498762.

It can be written as a sum of positive squares in 2 ways, for example, as 20358144 + 6431296 = 4512^2 + 2536^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 26789393 and 26789402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41539 + ... + 42178.

Almost surely, 2^26789440 is an apocalyptic number.

26789440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26789440 is an abundant number, since it is smaller than the sum of its proper divisors (37003676).

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

26789440 is an equidigital number, since it uses as much as digits as its factorization.

26789440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83734 (or 83724 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 26789440 is about 5175.8516207480. The cubic root of 26789440 is about 299.2181120895.

The spelling of 26789440 in words is "twenty-six million, seven hundred eighty-nine thousand, four hundred forty".