285734146 has 4 divisors (see below), whose sum is σ = 428601222. Its totient is φ = 142867072.

The previous prime is 285734123. The next prime is 285734149. The reversal of 285734146 is 641437582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 207676921 + 78057225 = 14411^2 + 8835^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 285734099 and 285734108.

It is not an unprimeable number, because it can be changed into a prime (285734149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71433535 + ... + 71433538.

Almost surely, 2^285734146 is an apocalyptic number.

285734146 is a deficient number, since it is larger than the sum of its proper divisors (142867076).

285734146 is a wasteful number, since it uses less digits than its factorization.

285734146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142867075.

The product of its digits is 161280, while the sum is 40.

The square root of 285734146 is about 16903.6725595357. The cubic root of 285734146 is about 658.6490164184.

The spelling of 285734146 in words is "two hundred eighty-five million, seven hundred thirty-four thousand, one hundred forty-six".