26181240 has 64 divisors (see below), whose sum is σ = 82684800. Its totient is φ = 6613632.

The previous prime is 26181217. The next prime is 26181257. The reversal of 26181240 is 4218162.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 26181240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3462 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (1291950).

Almost surely, 2^26181240 is an apocalyptic number.

26181240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26181240 is an abundant number, since it is smaller than the sum of its proper divisors (56503560).

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

26181240 is a wasteful number, since it uses less digits than its factorization.

26181240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 26181240 is about 5116.7606940329. The cubic root of 26181240 is about 296.9363760821.

The spelling of 26181240 in words is "twenty-six million, one hundred eighty-one thousand, two hundred forty".