285149535 has 16 divisors (see below), whose sum is σ = 497715840. Its totient is φ = 138254240.

The previous prime is 285149533. The next prime is 285149539. The reversal of 285149535 is 535941582.

It is not a de Polignac number, because 285149535 - 2¹ = 285149533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285149533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863925 + ... + 864254.

It is an arithmetic number, because the mean of its divisors is an integer number (31107240).

Almost surely, 2^285149535 is an apocalyptic number.

285149535 is a deficient number, since it is larger than the sum of its proper divisors (212566305).

285149535 is a wasteful number, since it uses less digits than its factorization.

285149535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728198.

The product of its digits is 216000, while the sum is 42.

The square root of 285149535 is about 16886.3712798221. The cubic root of 285149535 is about 658.1995119048.

The spelling of 285149535 in words is "two hundred eighty-five million, one hundred forty-nine thousand, five hundred thirty-five".