26240000 has 110 divisors (see below), whose sum is σ = 67145694. Its totient is φ = 10240000.

The previous prime is 26239999. The next prime is 26240017. The reversal of 26240000 is 4262.

It can be written as a sum of positive squares in 5 ways, for example, as 17572864 + 8667136 = 4192^2 + 2944^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 639980 + ... + 640020.

Almost surely, 2^26240000 is an apocalyptic number.

26240000 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 26240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33572847).

26240000 is an abundant number, since it is smaller than the sum of its proper divisors (40905694).

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

26240000 is an frugal number, since it uses more digits than its factorization.

26240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 26240000 is about 5122.4993899463. The cubic root of 26240000 is about 297.1583536579.

Adding to 26240000 its reverse (4262), we get a palindrome (26244262).

The spelling of 26240000 in words is "twenty-six million, two hundred forty thousand".