26352640 has 44 divisors (see below), whose sum is σ = 63227736. Its totient is φ = 10539008.

The previous prime is 26352611. The next prime is 26352643. The reversal of 26352640 is 4625362.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26352599 and 26352608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26352643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2547 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (1436994).

Almost surely, 2^26352640 is an apocalyptic number.

26352640 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 26352640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31613868).

26352640 is an abundant number, since it is smaller than the sum of its proper divisors (36875096).

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

26352640 is an equidigital number, since it uses as much as digits as its factorization.

26352640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 26352640 is about 5133.4822489223. The cubic root of 26352640 is about 297.5829488824.

The spelling of 26352640 in words is "twenty-six million, three hundred fifty-two thousand, six hundred forty".