285664332 has 12 divisors (see below), whose sum is σ = 666550136. Its totient is φ = 95221440.

The previous prime is 285664331. The next prime is 285664363. The reversal of 285664332 is 233466582.

It is a happy number.

285664332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×285664332² = 163208221154012448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285664331) 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 3 ways as a sum of consecutive naturals, for example, 11902669 + ... + 11902692.

Almost surely, 2^285664332 is an apocalyptic number.

It is an amenable number.

285664332 is an abundant number, since it is smaller than the sum of its proper divisors (380885804).

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

285664332 is a wasteful number, since it uses less digits than its factorization.

285664332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23805368 (or 23805366 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 285664332 is about 16901.6073791814. The cubic root of 285664332 is about 658.5953690349.

The spelling of 285664332 in words is "two hundred eighty-five million, six hundred sixty-four thousand, three hundred thirty-two".