26220587 has 4 divisors (see below), whose sum is σ = 26234160. Its totient is φ = 26207016.

The previous prime is 26220569. The next prime is 26220617. The reversal of 26220587 is 78502262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26220587 - 2¹⁴ = 26204203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26220527) 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, 3287 + ... + 7952.

It is an arithmetic number, because the mean of its divisors is an integer number (6558540).

Almost surely, 2^26220587 is an apocalyptic number.

26220587 is a deficient number, since it is larger than the sum of its proper divisors (13573).

26220587 is a wasteful number, since it uses less digits than its factorization.

26220587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 26220587 is about 5120.6041635729. The cubic root of 26220587 is about 297.0850538824.

The spelling of 26220587 in words is "twenty-six million, two hundred twenty thousand, five hundred eighty-seven".