26300021 has 4 divisors (see below), whose sum is σ = 28690944. Its totient is φ = 23909100.

The previous prime is 26300011. The next prime is 26300023. The reversal of 26300021 is 12000362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26300021 - 2⁶ = 26299957 is a prime.

It is a super-2 number, since 2×26300021² = 1383382209200882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26299969 and 26300005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26300023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195445 + ... + 1195466.

It is an arithmetic number, because the mean of its divisors is an integer number (7172736).

Almost surely, 2^26300021 is an apocalyptic number.

It is an amenable number.

26300021 is a deficient number, since it is larger than the sum of its proper divisors (2390923).

26300021 is a wasteful number, since it uses less digits than its factorization.

26300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390922.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 26300021 is about 5128.3546094240. The cubic root of 26300021 is about 297.3847530446.

Adding to 26300021 its reverse (12000362), we get a palindrome (38300383).

The spelling of 26300021 in words is "twenty-six million, three hundred thousand, twenty-one".