26866530 has 48 divisors (see below), whose sum is σ = 72895680. Its totient is φ = 6852384.

The previous prime is 26866517. The next prime is 26866537. The reversal of 26866530 is 3566862.

26866530 is a `hidden beast` number, since 2 + 68 + 66 + 530 = 666.

It is not an unprimeable number, because it can be changed into a prime (26866537) 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, 4420 + ... + 8559.

It is an arithmetic number, because the mean of its divisors is an integer number (1518660).

Almost surely, 2^26866530 is an apocalyptic number.

26866530 is an abundant number, since it is smaller than the sum of its proper divisors (46029150).

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

26866530 is a wasteful number, since it uses less digits than its factorization.

26866530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015 (or 13012 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 26866530 is about 5183.2933546154. The cubic root of 26866530 is about 299.5048498708.

It can be divided in two parts, 2686 and 6530, that added together give a square (9216 = 96²).

The spelling of 26866530 in words is "twenty-six million, eight hundred sixty-six thousand, five hundred thirty".