285840134 has 8 divisors (see below), whose sum is σ = 428833440. Its totient is φ = 142895656.

The previous prime is 285840127. The next prime is 285840169. The reversal of 285840134 is 431048582.

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 = 285840094 and 285840103.

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, 12152 + ... + 26820.

It is an arithmetic number, because the mean of its divisors is an integer number (53604180).

Almost surely, 2^285840134 is an apocalyptic number.

285840134 is a deficient number, since it is larger than the sum of its proper divisors (142993306).

285840134 is a wasteful number, since it uses less digits than its factorization.

285840134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24414.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 285840134 is about 16906.8073272277. The cubic root of 285840134 is about 658.7304443976.

The spelling of 285840134 in words is "two hundred eighty-five million, eight hundred forty thousand, one hundred thirty-four".