26506240 has 88 divisors (see below), whose sum is σ = 66028032. Its totient is φ = 10199040.

The previous prime is 26506237. The next prime is 26506241. The reversal of 26506240 is 4260562.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26506241) 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, 158637 + ... + 158803.

Almost surely, 2^26506240 is an apocalyptic number.

26506240 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 26506240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33014016).

26506240 is an abundant number, since it is smaller than the sum of its proper divisors (39521792).

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

26506240 is a wasteful number, since it uses less digits than its factorization.

26506240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 26506240 is about 5148.4211171970. The cubic root of 26506240 is about 298.1599969610.

The spelling of 26506240 in words is "twenty-six million, five hundred six thousand, two hundred forty".