205140510 has 24 divisors (see below), whose sum is σ = 533365560. Its totient is φ = 54704112.

The previous prime is 205140503. The next prime is 205140517. The reversal of 205140510 is 15041502.

It is an interprime number because it is at equal distance from previous prime (205140503) and next prime (205140517).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205140517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1139580 + ... + 1139759.

It is an arithmetic number, because the mean of its divisors is an integer number (22223565).

Almost surely, 2^205140510 is an apocalyptic number.

205140510 is an abundant number, since it is smaller than the sum of its proper divisors (328225050).

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

205140510 is a wasteful number, since it uses less digits than its factorization.

205140510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279352 (or 2279349 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 205140510 is about 14322.7270448054. The cubic root of 205140510 is about 589.7715384730.

It can be divided in two parts, 205 and 140510, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 205140510 in words is "two hundred five million, one hundred forty thousand, five hundred ten".