205572134 has 8 divisors (see below), whose sum is σ = 324587640. Its totient is φ = 97376256.

The previous prime is 205572127. The next prime is 205572151. The reversal of 205572134 is 431275502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 205572097 and 205572106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704859 + ... + 2704934.

It is an arithmetic number, because the mean of its divisors is an integer number (40573455).

Almost surely, 2^205572134 is an apocalyptic number.

205572134 is a deficient number, since it is larger than the sum of its proper divisors (119015506).

205572134 is a wasteful number, since it uses less digits than its factorization.

205572134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409814.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 205572134 is about 14337.7869282536. The cubic root of 205572134 is about 590.1848831676.

The spelling of 205572134 in words is "two hundred five million, five hundred seventy-two thousand, one hundred thirty-four".