23693891 has 8 divisors (see below), whose sum is σ = 25554480. Its totient is φ = 21838752.

The previous prime is 23693881. The next prime is 23693897. The reversal of 23693891 is 19839632.

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

It is a de Polignac number, because none of the positive numbers 2^k-23693891 is a prime.

It is a super-2 number, since 2×23693891² = 1122800941439762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23693897) 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, 15236 + ... + 16718.

It is an arithmetic number, because the mean of its divisors is an integer number (3194310).

Almost surely, 2^23693891 is an apocalyptic number.

23693891 is a deficient number, since it is larger than the sum of its proper divisors (1860589).

23693891 is a wasteful number, since it uses less digits than its factorization.

23693891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725.

The product of its digits is 69984, while the sum is 41.

The square root of 23693891 is about 4867.6371064409. The cubic root of 23693891 is about 287.2183141450.

The spelling of 23693891 in words is "twenty-three million, six hundred ninety-three thousand, eight hundred ninety-one".