26820478 has 8 divisors (see below), whose sum is σ = 41212080. Its totient is φ = 13083120.

The previous prime is 26820473. The next prime is 26820481. The reversal of 26820478 is 87402862.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26820473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163458 + ... + 163621.

It is an arithmetic number, because the mean of its divisors is an integer number (5151510).

Almost surely, 2^26820478 is an apocalyptic number.

26820478 is a deficient number, since it is larger than the sum of its proper divisors (14391602).

26820478 is a wasteful number, since it uses less digits than its factorization.

26820478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327122.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 26820478 is about 5178.8490999449. The cubic root of 26820478 is about 299.3336246125. Note that the first 3 decimals are identical.

The spelling of 26820478 in words is "twenty-six million, eight hundred twenty thousand, four hundred seventy-eight".