20452424 has 32 divisors (see below), whose sum is σ = 39960000. Its totient is φ = 9801792.

The previous prime is 20452363. The next prime is 20452427. The reversal of 20452424 is 42425402.

It is a self number, because there is not a number n which added to its sum of digits gives 20452424.

It is not an unprimeable number, because it can be changed into a prime (20452427) 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, 45947 + ... + 46389.

It is an arithmetic number, because the mean of its divisors is an integer number (1248750).

Almost surely, 2^20452424 is an apocalyptic number.

It is an amenable number.

20452424 is a deficient number, since it is larger than the sum of its proper divisors (19507576).

20452424 is a wasteful number, since it uses less digits than its factorization.

20452424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20452424 is about 4522.4356269603. The cubic root of 20452424 is about 273.4732986643.

Adding to 20452424 its reverse (42425402), we get a palindrome (62877826).

The spelling of 20452424 in words is "twenty million, four hundred fifty-two thousand, four hundred twenty-four".