26520840 has 96 divisors (see below), whose sum is σ = 89968320. Its totient is φ = 6762624.

The previous prime is 26520797. The next prime is 26520847. The reversal of 26520840 is 4802562.

26520840 is a `hidden beast` number, since 2 + 652 + 0 + 8 + 4 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (26520847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6679 + ... + 9881.

It is an arithmetic number, because the mean of its divisors is an integer number (937170).

Almost surely, 2^26520840 is an apocalyptic number.

26520840 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 26520840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44984160).

26520840 is an abundant number, since it is smaller than the sum of its proper divisors (63447480).

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

26520840 is a wasteful number, since it uses less digits than its factorization.

26520840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3236 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 26520840 is about 5149.8388324296. The cubic root of 26520840 is about 298.2147304495.

The spelling of 26520840 in words is "twenty-six million, five hundred twenty thousand, eight hundred forty".