205020802 has 12 divisors (see below), whose sum is σ = 357740550. Its totient is φ = 87866016.

The previous prime is 205020797. The next prime is 205020839. The reversal of 205020802 is 208020502.

It can be written as a sum of positive squares in only one way, i.e., 172633321 + 32387481 = 13139^2 + 5691^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 205020802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1045927 + ... + 1046122.

Almost surely, 2^205020802 is an apocalyptic number.

205020802 is a deficient number, since it is larger than the sum of its proper divisors (152719748).

205020802 is a wasteful number, since it uses less digits than its factorization.

205020802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092065 (or 2092058 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 205020802 is about 14318.5474821994. The cubic root of 205020802 is about 589.6567974295.

The spelling of 205020802 in words is "two hundred five million, twenty thousand, eight hundred two".