285538146 has 32 divisors (see below), whose sum is σ = 609776640. Its totient is φ = 88922064.

The previous prime is 285538093. The next prime is 285538151. The reversal of 285538146 is 641835582.

It is a super-2 number, since 2×285538146² = 163064065642234632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 285538098 and 285538107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18126 + ... + 29993.

It is an arithmetic number, because the mean of its divisors is an integer number (19055520).

Almost surely, 2^285538146 is an apocalyptic number.

285538146 is an abundant number, since it is smaller than the sum of its proper divisors (324238494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285538146 is a wasteful number, since it uses less digits than its factorization.

285538146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48190.

The product of its digits is 230400, while the sum is 42.

The square root of 285538146 is about 16897.8740082887. The cubic root of 285538146 is about 658.4983813637.

The spelling of 285538146 in words is "two hundred eighty-five million, five hundred thirty-eight thousand, one hundred forty-six".