20350628 has 6 divisors (see below), whose sum is σ = 35613606. Its totient is φ = 10175312.

The previous prime is 20350621. The next prime is 20350639. The reversal of 20350628 is 82605302.

It can be written as a sum of positive squares in only one way, i.e., 19166884 + 1183744 = 4378^2 + 1088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20350597 and 20350606.

It is not an unprimeable number, because it can be changed into a prime (20350621) 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 as a sum of consecutive naturals, namely, 2543825 + ... + 2543832.

It is an arithmetic number, because the mean of its divisors is an integer number (5935601).

Almost surely, 2^20350628 is an apocalyptic number.

It is an amenable number.

20350628 is a deficient number, since it is larger than the sum of its proper divisors (15262978).

20350628 is a wasteful number, since it uses less digits than its factorization.

20350628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087661 (or 5087659 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20350628 is about 4511.1670330415. The cubic root of 20350628 is about 273.0188325329.

The spelling of 20350628 in words is "twenty million, three hundred fifty thousand, six hundred twenty-eight".