23394240 has 84 divisors (see below), whose sum is σ = 80476344. Its totient is φ = 6237696.

The previous prime is 23394233. The next prime is 23394281. The reversal of 23394240 is 4249332.

It is a happy number.

23394240 is a `hidden beast` number, since 233 + 9 + 424 + 0 = 666.

It is a super-3 number, since 3×23394240³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1182 + ... + 6941.

Almost surely, 2^23394240 is an apocalyptic number.

23394240 is a gapful number since it is divisible by the number (20) 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 23394240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40238172).

23394240 is an abundant number, since it is smaller than the sum of its proper divisors (57082104).

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

23394240 is a wasteful number, since it uses less digits than its factorization.

23394240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146 (or 8133 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23394240 is about 4836.7592456106. The cubic root of 23394240 is about 286.0023798847.

The spelling of 23394240 in words is "twenty-three million, three hundred ninety-four thousand, two hundred forty".