26420491 has 8 divisors (see below), whose sum is σ = 27649440. Its totient is φ = 25198272.

The previous prime is 26420483. The next prime is 26420497. The reversal of 26420491 is 19402462.

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 26420491 - 2³ = 26420483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26420497) 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 7 ways as a sum of consecutive naturals, for example, 7471 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (3456180).

Almost surely, 2^26420491 is an apocalyptic number.

26420491 is a deficient number, since it is larger than the sum of its proper divisors (1228949).

26420491 is a wasteful number, since it uses less digits than its factorization.

26420491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 26420491 is about 5140.0866724210. The cubic root of 26420491 is about 297.8381288358.

The spelling of 26420491 in words is "twenty-six million, four hundred twenty thousand, four hundred ninety-one".