26520864 has 48 divisors (see below), whose sum is σ = 69981408. Its totient is φ = 8794112.

The previous prime is 26520847. The next prime is 26520881. The reversal of 26520864 is 46802562.

It is an interprime number because it is at equal distance from previous prime (26520847) and next prime (26520881).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21184 + ... + 22400.

It is an arithmetic number, because the mean of its divisors is an integer number (1457946).

Almost surely, 2^26520864 is an apocalyptic number.

26520864 is a gapful number since it is divisible by the number (24) 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 26520864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34990704).

26520864 is an abundant number, since it is smaller than the sum of its proper divisors (43460544).

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

26520864 is a wasteful number, since it uses less digits than its factorization.

26520864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 26520864 is about 5149.8411625991. The cubic root of 26520864 is about 298.2148204058.

The spelling of 26520864 in words is "twenty-six million, five hundred twenty thousand, eight hundred sixty-four".