26463440 has 20 divisors (see below), whose sum is σ = 61527684. Its totient is φ = 10585344.

The previous prime is 26463403. The next prime is 26463461. The reversal of 26463440 is 4436462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9784384 + 16679056 = 3128^2 + 4084^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 165317 + ... + 165476.

Almost surely, 2^26463440 is an apocalyptic number.

26463440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26463440 is an abundant number, since it is smaller than the sum of its proper divisors (35064244).

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

26463440 is a wasteful number, since it uses less digits than its factorization.

26463440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330806 (or 330800 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 26463440 is about 5144.2628237679. The cubic root of 26463440 is about 297.9994294540. Note that the first 3 decimals are identical.

The spelling of 26463440 in words is "twenty-six million, four hundred sixty-three thousand, four hundred forty".