20423150 has 48 divisors (see below), whose sum is σ = 42104448. Its totient is φ = 7308000.

The previous prime is 20423147. The next prime is 20423177. The reversal of 20423150 is 5132402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38789 + ... + 39311.

It is an arithmetic number, because the mean of its divisors is an integer number (877176).

Almost surely, 2^20423150 is an apocalyptic number.

20423150 is an abundant number, since it is smaller than the sum of its proper divisors (21681298).

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

20423150 is a wasteful number, since it uses less digits than its factorization.

20423150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20423150 is about 4519.1979376876. The cubic root of 20423150 is about 273.3427602671.

Adding to 20423150 its reverse (5132402), we get a palindrome (25555552).

The spelling of 20423150 in words is "twenty million, four hundred twenty-three thousand, one hundred fifty".