26530740 has 144 divisors (see below), whose sum is σ = 85857408. Its totient is φ = 6873984.

The previous prime is 26530733. The next prime is 26530741. The reversal of 26530740 is 4703562.

It is a happy number.

26530740 is a `hidden beast` number, since 2 + 653 + 0 + 7 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26530741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257529 + ... + 257631.

It is an arithmetic number, because the mean of its divisors is an integer number (596232).

Almost surely, 2^26530740 is an apocalyptic number.

26530740 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 26530740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42928704).

26530740 is an abundant number, since it is smaller than the sum of its proper divisors (59326668).

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

26530740 is a wasteful number, since it uses less digits than its factorization.

26530740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 26530740 is about 5150.7999378737. The cubic root of 26530740 is about 298.2518328257.

The spelling of 26530740 in words is "twenty-six million, five hundred thirty thousand, seven hundred forty".