26420647 has 8 divisors (see below), whose sum is σ = 28881792. Its totient is φ = 23969400.

The previous prime is 26420623. The next prime is 26420651. The reversal of 26420647 is 74602462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26420647 - 2⁷ = 26420519 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 (26420657) 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 7 ways as a sum of consecutive naturals, for example, 3822 + ... + 8212.

It is an arithmetic number, because the mean of its divisors is an integer number (3610224).

Almost surely, 2^26420647 is an apocalyptic number.

26420647 is the 2748-th centered heptagonal number.

26420647 is a deficient number, since it is larger than the sum of its proper divisors (2461145).

26420647 is a wasteful number, since it uses less digits than its factorization.

26420647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 26420647 is about 5140.1018472400. The cubic root of 26420647 is about 297.8387150305.

The spelling of 26420647 in words is "twenty-six million, four hundred twenty thousand, six hundred forty-seven".