20451124 has 24 divisors (see below), whose sum is σ = 36687168. Its totient is φ = 9972480.

The previous prime is 20451113. The next prime is 20451127. The reversal of 20451124 is 42115402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20451127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30052 + ... + 30724.

It is an arithmetic number, because the mean of its divisors is an integer number (1528632).

Almost surely, 2^20451124 is an apocalyptic number.

It is an amenable number.

20451124 is a deficient number, since it is larger than the sum of its proper divisors (16236044).

20451124 is a wasteful number, since it uses less digits than its factorization.

20451124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20451124 is about 4522.2918968152. The cubic root of 20451124 is about 273.4675043581.

Adding to 20451124 its reverse (42115402), we get a palindrome (62566526).

The spelling of 20451124 in words is "twenty million, four hundred fifty-one thousand, one hundred twenty-four".