205078461 has 16 divisors (see below), whose sum is σ = 312918144. Its totient is φ = 117031104.

The previous prime is 205078441. The next prime is 205078483. The reversal of 205078461 is 164870502.

It is not a de Polignac number, because 205078461 - 2⁶ = 205078397 is a prime.

It is a super-2 number, since 2×205078461² = 84114350332257042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205078441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10611 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (19557384).

Almost surely, 2^205078461 is an apocalyptic number.

205078461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

205078461 is a deficient number, since it is larger than the sum of its proper divisors (107839683).

205078461 is a wasteful number, since it uses less digits than its factorization.

205078461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13060.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 205078461 is about 14320.5607781260. The cubic root of 205078461 is about 589.7120696006.

The spelling of 205078461 in words is "two hundred five million, seventy-eight thousand, four hundred sixty-one".