23730421 has 8 divisors (see below), whose sum is σ = 27879264. Its totient is φ = 19913520.

The previous prime is 23730391. The next prime is 23730433. The reversal of 23730421 is 12403732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23730421 - 2⁵ = 23730389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23730392 and 23730401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23730481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 82831 + ... + 83116.

It is an arithmetic number, because the mean of its divisors is an integer number (3484908).

Almost surely, 2^23730421 is an apocalyptic number.

It is an amenable number.

23730421 is a deficient number, since it is larger than the sum of its proper divisors (4148843).

23730421 is a wasteful number, since it uses less digits than its factorization.

23730421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165971.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23730421 is about 4871.3879952227. The cubic root of 23730421 is about 287.3658444033.

The spelling of 23730421 in words is "twenty-three million, seven hundred thirty thousand, four hundred twenty-one".