26405552 has 40 divisors (see below), whose sum is σ = 53329920. Its totient is φ = 12651840.

The previous prime is 26405551. The next prime is 26405557. The reversal of 26405552 is 25550462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68753 + ... + 69135.

It is an arithmetic number, because the mean of its divisors is an integer number (1333248).

Almost surely, 2^26405552 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 26405552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26664960).

26405552 is an abundant number, since it is smaller than the sum of its proper divisors (26924368).

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

26405552 is a wasteful number, since it uses less digits than its factorization.

26405552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 26405552 is about 5138.6332813307. The cubic root of 26405552 is about 297.7819824823.

It can be divided in two parts, 2640 and 5552, that added together give a 13-th power (8192 = 2¹³).

The spelling of 26405552 in words is "twenty-six million, four hundred five thousand, five hundred fifty-two".