23232421 has 12 divisors (see below), whose sum is σ = 25984480. Its totient is φ = 20710080.

The previous prime is 23232409. The next prime is 23232431. The reversal of 23232421 is 12423232.

It is not a de Polignac number, because 23232421 - 2¹¹ = 23230373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23232431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3376 + ... + 7606.

Almost surely, 2^23232421 is an apocalyptic number.

It is an amenable number.

23232421 is a deficient number, since it is larger than the sum of its proper divisors (2752059).

23232421 is a wasteful number, since it uses less digits than its factorization.

23232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284 (or 4267 counting only the distinct ones).

The product of its digits is 576, while the sum is 19.

The square root of 23232421 is about 4820.0021784227. The cubic root of 23232421 is about 285.3414231785.

Adding to 23232421 its reverse (12423232), we get a palindrome (35655653).

It can be divided in two parts, 23232 and 421, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23232421 in words is "twenty-three million, two hundred thirty-two thousand, four hundred twenty-one".