26808480 has 72 divisors (see below), whose sum is σ = 91488852. Its totient is φ = 7148544.

The previous prime is 26808469. The next prime is 26808497. The reversal of 26808480 is 8480862.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 1527696 = 5028^2 + 1236^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7869 + ... + 10748.

Almost surely, 2^26808480 is an apocalyptic number.

26808480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26808480 is an abundant number, since it is smaller than the sum of its proper divisors (64680372).

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

26808480 is a wasteful number, since it uses less digits than its factorization.

26808480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638 (or 18627 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 26808480 is about 5177.6906048933. The cubic root of 26808480 is about 299.2889828467.

The spelling of 26808480 in words is "twenty-six million, eight hundred eight thousand, four hundred eighty".