285320148 has 48 divisors (see below), whose sum is σ = 684055680. Its totient is φ = 92505600.

The previous prime is 285320143. The next prime is 285320251. The reversal of 285320148 is 841023582.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285320143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215328 + ... + 216648.

It is an arithmetic number, because the mean of its divisors is an integer number (14251160).

Almost surely, 2^285320148 is an apocalyptic number.

It is an amenable number.

285320148 is an abundant number, since it is smaller than the sum of its proper divisors (398735532).

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

285320148 is a wasteful number, since it uses less digits than its factorization.

285320148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 285320148 is about 16891.4223202192. The cubic root of 285320148 is about 658.3307588356.

The spelling of 285320148 in words is "two hundred eighty-five million, three hundred twenty thousand, one hundred forty-eight".