26240720 has 40 divisors (see below), whose sum is σ = 66558240. Its totient is φ = 9541760.

The previous prime is 26240701. The next prime is 26240749. The reversal of 26240720 is 2704262.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26240720² = 1377150772236800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14030 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (1663956).

Almost surely, 2^26240720 is an apocalyptic number.

26240720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26240720 is an abundant number, since it is smaller than the sum of its proper divisors (40317520).

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

26240720 is a wasteful number, since it uses less digits than its factorization.

26240720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29843 (or 29837 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 26240720 is about 5122.5696676570. The cubic root of 26240720 is about 297.1610715448.

Adding to 26240720 its reverse (2704262), we get a palindrome (28944982).

The spelling of 26240720 in words is "twenty-six million, two hundred forty thousand, seven hundred twenty".