26905480 has 64 divisors (see below), whose sum is σ = 69632640. Its totient is φ = 9165312.

The previous prime is 26905477. The next prime is 26905493. The reversal of 26905480 is 8450962.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85804 + ... + 86116.

It is an arithmetic number, because the mean of its divisors is an integer number (1088010).

Almost surely, 2^26905480 is an apocalyptic number.

26905480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26905480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34816320).

26905480 is an abundant number, since it is smaller than the sum of its proper divisors (42727160).

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

26905480 is a wasteful number, since it uses less digits than its factorization.

26905480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 26905480 is about 5187.0492575259. The cubic root of 26905480 is about 299.6495166234.

The spelling of 26905480 in words is "twenty-six million, nine hundred five thousand, four hundred eighty".