285428136 has 64 divisors (see below), whose sum is σ = 832176000. Its totient is φ = 81548544.

The previous prime is 285428071. The next prime is 285428149. The reversal of 285428136 is 631824582.

It is a junction number, because it is equal to n+sod(n) for n = 285428094 and 285428103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9105 + ... + 25568.

It is an arithmetic number, because the mean of its divisors is an integer number (13002750).

Almost surely, 2^285428136 is an apocalyptic number.

It is an amenable number.

285428136 is an abundant number, since it is smaller than the sum of its proper divisors (546747864).

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

285428136 is a wasteful number, since it uses less digits than its factorization.

285428136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34703 (or 34685 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 285428136 is about 16894.6185514796. The cubic root of 285428136 is about 658.4138033914.

The spelling of 285428136 in words is "two hundred eighty-five million, four hundred twenty-eight thousand, one hundred thirty-six".