23862421 has 4 divisors (see below), whose sum is σ = 26031744. Its totient is φ = 21693100.

The previous prime is 23862403. The next prime is 23862439. The reversal of 23862421 is 12426832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (23862403) and next prime (23862439).

It is not a de Polignac number, because 23862421 - 2¹¹ = 23860373 is a prime.

It is a super-3 number, since 3×23862421³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23862421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23862401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084645 + ... + 1084666.

It is an arithmetic number, because the mean of its divisors is an integer number (6507936).

Almost surely, 2^23862421 is an apocalyptic number.

It is an amenable number.

23862421 is a deficient number, since it is larger than the sum of its proper divisors (2169323).

23862421 is a wasteful number, since it uses less digits than its factorization.

23862421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169322.

The product of its digits is 4608, while the sum is 28.

The square root of 23862421 is about 4884.9177065740. The cubic root of 23862421 is about 287.8976817927.

The spelling of 23862421 in words is "twenty-three million, eight hundred sixty-two thousand, four hundred twenty-one".