23421630 has 16 divisors (see below), whose sum is σ = 56211984. Its totient is φ = 6245760.

The previous prime is 23421617. The next prime is 23421641. The reversal of 23421630 is 3612432.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23421597 and 23421606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390331 + ... + 390390.

It is an arithmetic number, because the mean of its divisors is an integer number (3513249).

Almost surely, 2^23421630 is an apocalyptic number.

23421630 is an abundant number, since it is smaller than the sum of its proper divisors (32790354).

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

23421630 is a wasteful number, since it uses less digits than its factorization.

23421630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780731.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23421630 is about 4839.5898586554. The cubic root of 23421630 is about 286.1139536449.

The spelling of 23421630 in words is "twenty-three million, four hundred twenty-one thousand, six hundred thirty".