23390 has 8 divisors (see below), whose sum is σ = 42120.
Its totient is φ = 9352.
The previous prime is 23371. The next prime is 23399. The reversal of 23390 is 9332.
It can be divided in two parts, 233 and 90, that added together give a palindrome (323).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a nialpdrome in base 13.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23399) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160 + ... + 1179.
It is an arithmetic number, because the mean of its divisors is an integer number (5265).
223390 is an apocalyptic number.
23390 is a deficient number, since it is larger than the sum of its proper divisors (18730).
23390 is a wasteful number, since it uses less digits than its factorization.
23390 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2346.
The product of its (nonzero) digits is 162, while the sum is 17.
The square root of 23390 is about 152.9378958924.
The cubic root of 23390 is about 28.5985100370.
The spelling of 23390 in words is "twenty-three thousand, three hundred ninety".