23351420 has 12 divisors (see below), whose sum is σ = 49038024. Its totient is φ = 9340560.

The previous prime is 23351413. The next prime is 23351423. The reversal of 23351420 is 2415332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1167571 = 23351420 / (2 + 3 + 3 + 5 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 23351392 and 23351401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23351423) 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 3 ways as a sum of consecutive naturals, for example, 583766 + ... + 583805.

It is an arithmetic number, because the mean of its divisors is an integer number (4086502).

Almost surely, 2^23351420 is an apocalyptic number.

23351420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23351420 is an abundant number, since it is smaller than the sum of its proper divisors (25686604).

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

23351420 is a wasteful number, since it uses less digits than its factorization.

23351420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167580 (or 1167578 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23351420 is about 4832.3307006040. The cubic root of 23351420 is about 285.8277770559.

Adding to 23351420 its reverse (2415332), we get a palindrome (25766752).

The spelling of 23351420 in words is "twenty-three million, three hundred fifty-one thousand, four hundred twenty".