23345420 has 72 divisors (see below), whose sum is σ = 59621856. Its totient is φ = 7520256.

The previous prime is 23345407. The next prime is 23345447. The reversal of 23345420 is 2454332.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40172 + ... + 40748.

Almost surely, 2^23345420 is an apocalyptic number.

23345420 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 23345420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29810928).

23345420 is an abundant number, since it is smaller than the sum of its proper divisors (36276436).

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

23345420 is a wasteful number, since it uses less digits than its factorization.

23345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 23345420 is about 4831.7098422815. The cubic root of 23345420 is about 285.8032944111.

Adding to 23345420 its reverse (2454332), we get a palindrome (25799752).

The spelling of 23345420 in words is "twenty-three million, three hundred forty-five thousand, four hundred twenty".