20637124 has 6 divisors (see below), whose sum is σ = 36114974. Its totient is φ = 10318560.

The previous prime is 20637121. The next prime is 20637137. The reversal of 20637124 is 42173602.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 7387524 = 3640^2 + 2718^2 .

It is not an unprimeable number, because it can be changed into a prime (20637121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2579637 + ... + 2579644.

Almost surely, 2^20637124 is an apocalyptic number.

It is an amenable number.

20637124 is a deficient number, since it is larger than the sum of its proper divisors (15477850).

20637124 is a wasteful number, since it uses less digits than its factorization.

20637124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159285 (or 5159283 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20637124 is about 4542.8101435125. The cubic root of 20637124 is about 274.2940526876.

The spelling of 20637124 in words is "twenty million, six hundred thirty-seven thousand, one hundred twenty-four".