23573421 has 12 divisors (see below), whose sum is σ = 34145280. Its totient is φ = 15671880.

The previous prime is 23573419. The next prime is 23573437. The reversal of 23573421 is 12437532.

23573421 is a `hidden beast` number, since 235 + 7 + 3 + 421 = 666.

It is not a de Polignac number, because 23573421 - 2¹ = 23573419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23573021) 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, 45 + ... + 6866.

It is an arithmetic number, because the mean of its divisors is an integer number (2845440).

Almost surely, 2^23573421 is an apocalyptic number.

It is an amenable number.

23573421 is a deficient number, since it is larger than the sum of its proper divisors (10571859).

23573421 is a wasteful number, since it uses less digits than its factorization.

23573421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7296 (or 7293 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23573421 is about 4855.2467496514. The cubic root of 23573421 is about 286.7307060523.

It can be divided in two parts, 2357 and 3421, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 23573421 in words is "twenty-three million, five hundred seventy-three thousand, four hundred twenty-one".