20630924 has 6 divisors (see below), whose sum is σ = 36104124. Its totient is φ = 10315460.

The previous prime is 20630893. The next prime is 20630963. The reversal of 20630924 is 42903602.

It is a junction number, because it is equal to n+sod(n) for n = 20630893 and 20630902.

It is an unprimeable number.

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, 2578862 + ... + 2578869.

It is an arithmetic number, because the mean of its divisors is an integer number (6017354).

Almost surely, 2^20630924 is an apocalyptic number.

It is an amenable number.

20630924 is a deficient number, since it is larger than the sum of its proper divisors (15473200).

20630924 is a wasteful number, since it uses less digits than its factorization.

20630924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157735 (or 5157733 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20630924 is about 4542.1276952547. The cubic root of 20630924 is about 274.2665812650.

The spelling of 20630924 in words is "twenty million, six hundred thirty thousand, nine hundred twenty-four".