285269628 has 96 divisors (see below), whose sum is σ = 776925184. Its totient is φ = 79792128.

The previous prime is 285269627. The next prime is 285269641. The reversal of 285269628 is 826962582.

285269628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (48) 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 (285269623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1279125 + ... + 1279347.

Almost surely, 2^285269628 is an apocalyptic number.

285269628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285269628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388462592).

285269628 is an abundant number, since it is smaller than the sum of its proper divisors (491655556).

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

285269628 is a wasteful number, since it uses less digits than its factorization.

285269628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 285269628 is about 16889.9268204454. The cubic root of 285269628 is about 658.2919009265.

The spelling of 285269628 in words is "two hundred eighty-five million, two hundred sixty-nine thousand, six hundred twenty-eight".