205872430 has 16 divisors (see below), whose sum is σ = 371322000. Its totient is φ = 82181952.

The previous prime is 205872427. The next prime is 205872437. The reversal of 205872430 is 34278502.

205872430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 205872392 and 205872401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205872437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15639 + ... + 25618.

It is an arithmetic number, because the mean of its divisors is an integer number (23207625).

Almost surely, 2^205872430 is an apocalyptic number.

205872430 is a deficient number, since it is larger than the sum of its proper divisors (165449570).

205872430 is a wasteful number, since it uses less digits than its factorization.

205872430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41763.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 205872430 is about 14348.2552946343. The cubic root of 205872430 is about 590.4721204308.

The spelling of 205872430 in words is "two hundred five million, eight hundred seventy-two thousand, four hundred thirty".