23340389 has 8 divisors (see below), whose sum is σ = 24219000. Its totient is φ = 22466752.

The previous prime is 23340353. The next prime is 23340407. The reversal of 23340389 is 98304332.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 136900 + 23203489 = 370^2 + 4817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23340389 - 2²⁰ = 22291813 is a prime.

It is a super-3 number, since 3×23340389³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23340319) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 10247 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (3027375).

Almost surely, 2^23340389 is an apocalyptic number.

23340389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23340389 is a deficient number, since it is larger than the sum of its proper divisors (878611).

23340389 is a wasteful number, since it uses less digits than its factorization.

23340389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 23340389 is about 4831.1891910791. The cubic root of 23340389 is about 285.7827624798.

The spelling of 23340389 in words is "twenty-three million, three hundred forty thousand, three hundred eighty-nine".