20630074 has 4 divisors (see below), whose sum is σ = 30945114. Its totient is φ = 10315036.

The previous prime is 20630069. The next prime is 20630083. The reversal of 20630074 is 47003602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 154449 = 4525^2 + 393^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5157517 + ... + 5157520.

Almost surely, 2^20630074 is an apocalyptic number.

20630074 is a deficient number, since it is larger than the sum of its proper divisors (10315040).

20630074 is a wasteful number, since it uses less digits than its factorization.

20630074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10315039.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20630074 is about 4542.0341258075. The cubic root of 20630074 is about 274.2628145926.

Adding to 20630074 its reverse (47003602), we get a palindrome (67633676).

The spelling of 20630074 in words is "twenty million, six hundred thirty thousand, seventy-four".