26423890 has 8 divisors (see below), whose sum is σ = 47563020. Its totient is φ = 10569552.

The previous prime is 26423863. The next prime is 26423893. The reversal of 26423890 is 9832462.

It can be written as a sum of positive squares in 2 ways, for example, as 24176889 + 2247001 = 4917^2 + 1499^2 .

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

It is not an unprimeable number, because it can be changed into a prime (26423893) 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 3 ways as a sum of consecutive naturals, for example, 1321185 + ... + 1321204.

Almost surely, 2^26423890 is an apocalyptic number.

26423890 is a deficient number, since it is larger than the sum of its proper divisors (21139130).

26423890 is a wasteful number, since it uses less digits than its factorization.

26423890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642396.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 26423890 is about 5140.4172982356. The cubic root of 26423890 is about 297.8509005943.

The spelling of 26423890 in words is "twenty-six million, four hundred twenty-three thousand, eight hundred ninety".