26408840 has 32 divisors (see below), whose sum is σ = 60545880. Its totient is φ = 10363392.

The previous prime is 26408839. The next prime is 26408867. The reversal of 26408840 is 4880462.

It can be written as a sum of positive squares in 4 ways, for example, as 25623844 + 784996 = 5062^2 + 886^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26408797 and 26408806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 8348.

Almost surely, 2^26408840 is an apocalyptic number.

26408840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26408840 is an abundant number, since it is smaller than the sum of its proper divisors (34137040).

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

26408840 is a wasteful number, since it uses less digits than its factorization.

26408840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521 (or 12517 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 26408840 is about 5138.9532007988. The cubic root of 26408840 is about 297.7943418341.

The spelling of 26408840 in words is "twenty-six million, four hundred eight thousand, eight hundred forty".