205152030 has 24 divisors (see below), whose sum is σ = 533395512. Its totient is φ = 54707184.

The previous prime is 205152023. The next prime is 205152041. The reversal of 205152030 is 30251502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 205151994 and 205152012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1139644 + ... + 1139823.

It is an arithmetic number, because the mean of its divisors is an integer number (22224813).

Almost surely, 2^205152030 is an apocalyptic number.

205152030 is an abundant number, since it is smaller than the sum of its proper divisors (328243482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205152030 is a wasteful number, since it uses less digits than its factorization.

205152030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279480 (or 2279477 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 205152030 is about 14323.1291972111. The cubic root of 205152030 is about 589.7825781273.

The spelling of 205152030 in words is "two hundred five million, one hundred fifty-two thousand, thirty".