10205428 has 6 divisors (see below), whose sum is σ = 17859506. Its totient is φ = 5102712.

The previous prime is 10205411. The next prime is 10205441. The reversal of 10205428 is 82450201.

It can be written as a sum of positive squares in only one way, i.e., 5702544 + 4502884 = 2388^2 + 2122^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10205399 and 10205408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275675 + ... + 1275682.

Almost surely, 2^10205428 is an apocalyptic number.

It is an amenable number.

10205428 is a deficient number, since it is larger than the sum of its proper divisors (7654078).

10205428 is a wasteful number, since it uses less digits than its factorization.

10205428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551361 (or 2551359 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 10205428 is about 3194.5935578724. The cubic root of 10205428 is about 216.9087513739.

Adding to 10205428 its reverse (82450201), we get a palindrome (92655629).

The spelling of 10205428 in words is "ten million, two hundred five thousand, four hundred twenty-eight".