26665056 has 144 divisors (see below), whose sum is σ = 87272640. Its totient is φ = 7637760.

The previous prime is 26665043. The next prime is 26665081. The reversal of 26665056 is 65056662.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×26665056² = 1422050422966272, which contains 22 as substring.

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 26665056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59971 + ... + 60413.

It is an arithmetic number, because the mean of its divisors is an integer number (606060).

Almost surely, 2^26665056 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 26665056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43636320).

26665056 is an abundant number, since it is smaller than the sum of its proper divisors (60607584).

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

26665056 is a wasteful number, since it uses less digits than its factorization.

26665056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 26665056 is about 5163.8218404589. The cubic root of 26665056 is about 298.7543012750.

The spelling of 26665056 in words is "twenty-six million, six hundred sixty-five thousand, fifty-six".