23644434 has 32 divisors (see below), whose sum is σ = 52367616. Its totient is φ = 7056720.

The previous prime is 23644421. The next prime is 23644447. The reversal of 23644434 is 43444632.

It is an interprime number because it is at equal distance from previous prime (23644421) and next prime (23644447).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749 + ... + 7095.

It is an arithmetic number, because the mean of its divisors is an integer number (1636488).

Almost surely, 2^23644434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23644434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26183808).

23644434 is an abundant number, since it is smaller than the sum of its proper divisors (28723182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23644434 is a wasteful number, since it uses less digits than its factorization.

23644434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430.

The product of its digits is 27648, while the sum is 30.

The square root of 23644434 is about 4862.5542670494. The cubic root of 23644434 is about 287.0183350150.

The spelling of 23644434 in words is "twenty-three million, six hundred forty-four thousand, four hundred thirty-four".