285035421 has 16 divisors (see below), whose sum is σ = 427972608. Its totient is φ = 167175600.

The previous prime is 285035417. The next prime is 285035449. The reversal of 285035421 is 124530582.

It is not a de Polignac number, because 285035421 - 2² = 285035417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285036421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 138291 + ... + 140336.

It is an arithmetic number, because the mean of its divisors is an integer number (26748288).

Almost surely, 2^285035421 is an apocalyptic number.

It is an amenable number.

285035421 is a deficient number, since it is larger than the sum of its proper divisors (142937187).

285035421 is a wasteful number, since it uses less digits than its factorization.

285035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278672.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 285035421 is about 16882.9920630201. The cubic root of 285035421 is about 658.1116985630. Note that the first 3 decimals are identical.

The spelling of 285035421 in words is "two hundred eighty-five million, thirty-five thousand, four hundred twenty-one".