26408240 has 20 divisors (see below), whose sum is σ = 61399344. Its totient is φ = 10563264.

The previous prime is 26408231. The next prime is 26408243. The reversal of 26408240 is 4280462.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (26408243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164972 + ... + 165131.

Almost surely, 2^26408240 is an apocalyptic number.

26408240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26408240 is an abundant number, since it is smaller than the sum of its proper divisors (34991104).

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

26408240 is a wasteful number, since it uses less digits than its factorization.

26408240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330116 (or 330110 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 26408240 is about 5138.8948228194. The cubic root of 26408240 is about 297.7920865545.

The spelling of 26408240 in words is "twenty-six million, four hundred eight thousand, two hundred forty".