23642424 has 144 divisors (see below), whose sum is σ = 72797400. Its totient is φ = 6918912.

The previous prime is 23642419. The next prime is 23642431. The reversal of 23642424 is 42424632.

23642424 is a `hidden beast` number, since 236 + 4 + 2 + 424 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 352839 + ... + 352905.

Almost surely, 2^23642424 is an apocalyptic number.

23642424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23642424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36398700).

23642424 is an abundant number, since it is smaller than the sum of its proper divisors (49154976).

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

23642424 is a wasteful number, since it uses less digits than its factorization.

23642424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 114 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 23642424 is about 4862.3475811587. The cubic root of 23642424 is about 287.0102016956.

The spelling of 23642424 in words is "twenty-three million, six hundred forty-two thousand, four hundred twenty-four".