26193923 has 16 divisors (see below), whose sum is σ = 32440320. Its totient is φ = 20635776.

The previous prime is 26193919. The next prime is 26193943. The reversal of 26193923 is 32939162.

It is a Cunningham number, because it is equal to 5118²-1.

It is not a de Polignac number, because 26193923 - 2² = 26193919 is a prime.

It is a super-2 number, since 2×26193923² = 1372243204259858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26193943) 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 15 ways as a sum of consecutive naturals, for example, 2558 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (2027520).

Almost surely, 2^26193923 is an apocalyptic number.

26193923 is a deficient number, since it is larger than the sum of its proper divisors (6246397).

26193923 is a wasteful number, since it uses less digits than its factorization.

26193923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186.

The product of its digits is 17496, while the sum is 35.

The square root of 26193923 is about 5117.9999023056. Note that the first 4 decimals coincide. The cubic root of 26193923 is about 296.9843167207.

The spelling of 26193923 in words is "twenty-six million, one hundred ninety-three thousand, nine hundred twenty-three".