205146628 has 6 divisors (see below), whose sum is σ = 359006606. Its totient is φ = 102573312.

The previous prime is 205146581. The next prime is 205146653. The reversal of 205146628 is 826641502.

205146628 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141657604 + 63489024 = 11902^2 + 7968^2 .

205146628 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 205146593 and 205146602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25643325 + ... + 25643332.

Almost surely, 2^205146628 is an apocalyptic number.

It is an amenable number.

205146628 is a deficient number, since it is larger than the sum of its proper divisors (153859978).

205146628 is a wasteful number, since it uses less digits than its factorization.

205146628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51286661 (or 51286659 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 205146628 is about 14322.9406198588. The cubic root of 205146628 is about 589.7774014242. Note that the first 3 decimals are identical.

The spelling of 205146628 in words is "two hundred five million, one hundred forty-six thousand, six hundred twenty-eight".