26396664 has 64 divisors (see below), whose sum is σ = 76515840. Its totient is φ = 7432320.

The previous prime is 26396633. The next prime is 26396677. The reversal of 26396664 is 46669362.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10822 + ... + 13034.

It is an arithmetic number, because the mean of its divisors is an integer number (1195560).

Almost surely, 2^26396664 is an apocalyptic number.

26396664 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 26396664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38257920).

26396664 is an abundant number, since it is smaller than the sum of its proper divisors (50119176).

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

26396664 is a wasteful number, since it uses less digits than its factorization.

26396664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300 (or 2296 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 26396664 is about 5137.7683871502. The cubic root of 26396664 is about 297.7485680035.

The spelling of 26396664 in words is "twenty-six million, three hundred ninety-six thousand, six hundred sixty-four".