285132445 has 8 divisors (see below), whose sum is σ = 368478936. Its totient is φ = 210559296.

The previous prime is 285132439. The next prime is 285132457. The reversal of 285132445 is 544231582.

It can be written as a sum of positive squares in 4 ways, for example, as 10169721 + 274962724 = 3189^2 + 16582^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285132445 - 2⁵ = 285132413 is a prime.

It is a super-2 number, since 2×285132445² = 162601022383356050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285132445.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2193262 + ... + 2193391.

It is an arithmetic number, because the mean of its divisors is an integer number (46059867).

Almost surely, 2^285132445 is an apocalyptic number.

It is an amenable number.

285132445 is a deficient number, since it is larger than the sum of its proper divisors (83346491).

285132445 is a wasteful number, since it uses less digits than its factorization.

285132445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386671.

The product of its digits is 38400, while the sum is 34.

The square root of 285132445 is about 16885.8652428592. The cubic root of 285132445 is about 658.1863622493.

The spelling of 285132445 in words is "two hundred eighty-five million, one hundred thirty-two thousand, four hundred forty-five".