20423030 has 8 divisors (see below), whose sum is σ = 36761472. Its totient is φ = 8169208.

The previous prime is 20423023. The next prime is 20423041. The reversal of 20423030 is 3032402.

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

It is a junction number, because it is equal to n+sod(n) for n = 20422996 and 20423014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021142 + ... + 1021161.

It is an arithmetic number, because the mean of its divisors is an integer number (4595184).

Almost surely, 2^20423030 is an apocalyptic number.

20423030 is a deficient number, since it is larger than the sum of its proper divisors (16338442).

20423030 is a wasteful number, since it uses less digits than its factorization.

20423030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042310.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20423030 is about 4519.1846609759. The cubic root of 20423030 is about 273.3422249074.

Adding to 20423030 its reverse (3032402), we get a palindrome (23455432).

The spelling of 20423030 in words is "twenty million, four hundred twenty-three thousand, thirty".