26885021 has 4 divisors (see below), whose sum is σ = 26943552. Its totient is φ = 26826492.

The previous prime is 26885003. The next prime is 26885069. The reversal of 26885021 is 12058862.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12058862 = 2 ⋅6029431.

It is a cyclic number.

It is not a de Polignac number, because 26885021 - 2¹⁸ = 26622877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26885821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28571 + ... + 29496.

It is an arithmetic number, because the mean of its divisors is an integer number (6735888).

Almost surely, 2^26885021 is an apocalyptic number.

It is an amenable number.

26885021 is a deficient number, since it is larger than the sum of its proper divisors (58531).

26885021 is an equidigital number, since it uses as much as digits as its factorization.

26885021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58530.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 26885021 is about 5185.0767593161. The cubic root of 26885021 is about 299.5735459288.

The spelling of 26885021 in words is "twenty-six million, eight hundred eighty-five thousand, twenty-one".