23729434 has 4 divisors (see below), whose sum is σ = 35594154. Its totient is φ = 11864716.

The previous prime is 23729417. The next prime is 23729441. The reversal of 23729434 is 43492732.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 13712209 + 10017225 = 3703^2 + 3165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23729434.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5932357 + ... + 5932360.

Almost surely, 2^23729434 is an apocalyptic number.

23729434 is a deficient number, since it is larger than the sum of its proper divisors (11864720).

23729434 is a wasteful number, since it uses less digits than its factorization.

23729434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864719.

The product of its digits is 36288, while the sum is 34.

The square root of 23729434 is about 4871.2866883402. The cubic root of 23729434 is about 287.3618602905.

The spelling of 23729434 in words is "twenty-three million, seven hundred twenty-nine thousand, four hundred thirty-four".