23798681 has 4 divisors (see below), whose sum is σ = 23972532. Its totient is φ = 23624832.

The previous prime is 23798641. The next prime is 23798683. The reversal of 23798681 is 18689732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18318400 + 5480281 = 4280^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 23798681 - 2⁶ = 23798617 is a prime.

It is a super-2 number, since 2×23798681² = 1132754434679522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23798683) 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 3 ways as a sum of consecutive naturals, for example, 86720 + ... + 86993.

It is an arithmetic number, because the mean of its divisors is an integer number (5993133).

Almost surely, 2^23798681 is an apocalyptic number.

It is an amenable number.

23798681 is a deficient number, since it is larger than the sum of its proper divisors (173851).

23798681 is a wasteful number, since it uses less digits than its factorization.

23798681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173850.

The product of its digits is 145152, while the sum is 44.

The square root of 23798681 is about 4878.3891808670. The cubic root of 23798681 is about 287.6411143421.

The spelling of 23798681 in words is "twenty-three million, seven hundred ninety-eight thousand, six hundred eighty-one".