23223420 has 144 divisors (see below), whose sum is σ = 79174368. Its totient is φ = 5460480.

The previous prime is 23223401. The next prime is 23223439. The reversal of 23223420 is 2432232.

23223420 is a `hidden beast` number, since 2 + 322 + 342 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23223401) and next prime (23223439).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23223393 and 23223402.

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 47 ways as a sum of consecutive naturals, for example, 73102 + ... + 73418.

It is an arithmetic number, because the mean of its divisors is an integer number (549822).

Almost surely, 2^23223420 is an apocalyptic number.

23223420 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 23223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39587184).

23223420 is an abundant number, since it is smaller than the sum of its proper divisors (55950948).

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

23223420 is a wasteful number, since it uses less digits than its factorization.

23223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23223420 is about 4819.0683746965. The cubic root of 23223420 is about 285.3045682175.

Adding to 23223420 its reverse (2432232), we get a palindrome (25655652).

The spelling of 23223420 in words is "twenty-three million, two hundred twenty-three thousand, four hundred twenty".