26216440 has 32 divisors (see below), whose sum is σ = 59136480. Its totient is φ = 10460032.

The previous prime is 26216429. The next prime is 26216441. The reversal of 26216440 is 4461262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26216441) 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 7 ways as a sum of consecutive naturals, for example, 25374 + ... + 26386.

It is an arithmetic number, because the mean of its divisors is an integer number (1848015).

Almost surely, 2^26216440 is an apocalyptic number.

26216440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26216440 is an abundant number, since it is smaller than the sum of its proper divisors (32920040).

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

26216440 is a wasteful number, since it uses less digits than its factorization.

26216440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 26216440 is about 5120.1992148744. The cubic root of 26216440 is about 297.0693909141.

The spelling of 26216440 in words is "twenty-six million, two hundred sixteen thousand, four hundred forty".