20424372 has 24 divisors (see below), whose sum is σ = 47853792. Its totient is φ = 6780000.

The previous prime is 20424353. The next prime is 20424377. The reversal of 20424372 is 27342402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (1993908).

Almost surely, 2^20424372 is an apocalyptic number.

It is an amenable number.

20424372 is an abundant number, since it is smaller than the sum of its proper divisors (27429420).

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

20424372 is a wasteful number, since it uses less digits than its factorization.

20424372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039 (or 7037 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20424372 is about 4519.3331366475. Note that the first 3 decimals coincide. The cubic root of 20424372 is about 273.3482118942.

Adding to 20424372 its reverse (27342402), we get a palindrome (47766774).

The spelling of 20424372 in words is "twenty million, four hundred twenty-four thousand, three hundred seventy-two".