26211440 has 40 divisors (see below), whose sum is σ = 61552608. Its totient is φ = 10379520.

The previous prime is 26211439. The next prime is 26211443. The reversal of 26211440 is 4411262.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26211443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6650 + ... + 9830.

Almost surely, 2^26211440 is an apocalyptic number.

26211440 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 26211440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30776304).

26211440 is an abundant number, since it is smaller than the sum of its proper divisors (35341168).

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

26211440 is a wasteful number, since it uses less digits than its factorization.

26211440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297 (or 3291 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 26211440 is about 5119.7109293397. The cubic root of 26211440 is about 297.0505040198.

The spelling of 26211440 in words is "twenty-six million, two hundred eleven thousand, four hundred forty".