23681805 has 32 divisors (see below), whose sum is σ = 44368128. Its totient is φ = 10560000.

The previous prime is 23681767. The next prime is 23681807. The reversal of 23681805 is 50818632.

It is a happy number.

It is not a de Polignac number, because 23681805 - 2⁸ = 23681549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23681807) 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 31 ways as a sum of consecutive naturals, for example, 1555 + ... + 7055.

It is an arithmetic number, because the mean of its divisors is an integer number (1386504).

Almost surely, 2^23681805 is an apocalyptic number.

It is an amenable number.

23681805 is a deficient number, since it is larger than the sum of its proper divisors (20686323).

23681805 is a wasteful number, since it uses less digits than its factorization.

23681805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 23681805 is about 4866.3954833121. The cubic root of 23681805 is about 287.1694701773.

The spelling of 23681805 in words is "twenty-three million, six hundred eighty-one thousand, eight hundred five".