26920656 has 120 divisors (see below), whose sum is σ = 91226304. Its totient is φ = 7234560.

The previous prime is 26920651. The next prime is 26920657. The reversal of 26920656 is 65602962.

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 26920656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26920651) 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, 16351 + ... + 17921.

Almost surely, 2^26920656 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 26920656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45613152).

26920656 is an abundant number, since it is smaller than the sum of its proper divisors (64305648).

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

26920656 is a wasteful number, since it uses less digits than its factorization.

26920656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 26920656 is about 5188.5119253983. The cubic root of 26920656 is about 299.7058450037.

The spelling of 26920656 in words is "twenty-six million, nine hundred twenty thousand, six hundred fifty-six".