26228736 has 72 divisors (see below), whose sum is σ = 75806640. Its totient is φ = 8736768.

The previous prime is 26228707. The next prime is 26228737. The reversal of 26228736 is 63782262.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 26228736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26228737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17721 + ... + 19143.

It is an arithmetic number, because the mean of its divisors is an integer number (1052870).

Almost surely, 2^26228736 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 26228736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37903320).

26228736 is an abundant number, since it is smaller than the sum of its proper divisors (49577904).

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

26228736 is a wasteful number, since it uses less digits than its factorization.

26228736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1428 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 26228736 is about 5121.3998086461. The cubic root of 26228736 is about 297.1158273525.

The spelling of 26228736 in words is "twenty-six million, two hundred twenty-eight thousand, seven hundred thirty-six".