26621056 has 128 divisors (see below), whose sum is σ = 68837760. Its totient is φ = 9953280.

The previous prime is 26621053. The next prime is 26621081. The reversal of 26621056 is 65012662.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (26621053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364636 + ... + 364708.

It is an arithmetic number, because the mean of its divisors is an integer number (537795).

Almost surely, 2^26621056 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 26621056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34418880).

26621056 is an abundant number, since it is smaller than the sum of its proper divisors (42216704).

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

26621056 is a wasteful number, since it uses less digits than its factorization.

26621056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 26621056 is about 5159.5596711347. The cubic root of 26621056 is about 298.5898860170.

The spelling of 26621056 in words is "twenty-six million, six hundred twenty-one thousand, fifty-six".