26070021 has 12 divisors (see below), whose sum is σ = 38023648. Its totient is φ = 17210664.

The previous prime is 26070013. The next prime is 26070029. The reversal of 26070021 is 12007062.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26070013) and next prime (26070029).

It is not a de Polignac number, because 26070021 - 2³ = 26070013 is a prime.

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 = 26069976 and 26070003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26070029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13135 + ... + 14988.

Almost surely, 2^26070021 is an apocalyptic number.

It is an amenable number.

26070021 is a deficient number, since it is larger than the sum of its proper divisors (11953627).

26070021 is a wasteful number, since it uses less digits than its factorization.

26070021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28232 (or 28229 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 26070021 is about 5105.8810209405. The cubic root of 26070021 is about 296.5153132486.

Adding to 26070021 its reverse (12007062), we get a palindrome (38077083).

The spelling of 26070021 in words is "twenty-six million, seventy thousand, twenty-one".