26386864 has 40 divisors (see below), whose sum is σ = 59797760. Its totient is φ = 11043648.

The previous prime is 26386861. The next prime is 26386879. The reversal of 26386864 is 46868362.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 26386864.

It is not an unprimeable number, because it can be changed into a prime (26386861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (1494944).

Almost surely, 2^26386864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26386864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29898880).

26386864 is an abundant number, since it is smaller than the sum of its proper divisors (33410896).

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

26386864 is a wasteful number, since it uses less digits than its factorization.

26386864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5531 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 26386864 is about 5136.8145771480. The cubic root of 26386864 is about 297.7117161606.

The spelling of 26386864 in words is "twenty-six million, three hundred eighty-six thousand, eight hundred sixty-four".