23643378 has 48 divisors (see below), whose sum is σ = 57204576. Its totient is φ = 6995520.

The previous prime is 23643377. The next prime is 23643401. The reversal of 23643378 is 87334632.

23643378 is a `hidden beast` number, since 2 + 3 + 643 + 3 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7126 + ... + 9902.

It is an arithmetic number, because the mean of its divisors is an integer number (1191762).

Almost surely, 2^23643378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23643378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28602288).

23643378 is an abundant number, since it is smaller than the sum of its proper divisors (33561198).

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

23643378 is a wasteful number, since it uses less digits than its factorization.

23643378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839 (or 2836 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 23643378 is about 4862.4456809305. The cubic root of 23643378 is about 287.0140620450.

The spelling of 23643378 in words is "twenty-three million, six hundred forty-three thousand, three hundred seventy-eight".