26240621 has 16 divisors (see below), whose sum is σ = 30317760. Its totient is φ = 22485120.

The previous prime is 26240611. The next prime is 26240651. The reversal of 26240621 is 12604262.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26240621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26240611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12761 + ... + 14673.

It is an arithmetic number, because the mean of its divisors is an integer number (1894860).

Almost surely, 2^26240621 is an apocalyptic number.

It is an amenable number.

26240621 is a deficient number, since it is larger than the sum of its proper divisors (4077139).

26240621 is a wasteful number, since it uses less digits than its factorization.

26240621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 26240621 is about 5122.5600045290. The cubic root of 26240621 is about 297.1606978383.

Adding to 26240621 its reverse (12604262), we get a palindrome (38844883).

The spelling of 26240621 in words is "twenty-six million, two hundred forty thousand, six hundred twenty-one".