285081634 has 8 divisors (see below), whose sum is σ = 429861888. Its totient is φ = 141794340.

The previous prime is 285081623. The next prime is 285081637. The reversal of 285081634 is 436180582.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 285081593 and 285081602.

It is not an unprimeable number, because it can be changed into a prime (285081637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372762 + ... + 373525.

It is an arithmetic number, because the mean of its divisors is an integer number (53732736).

Almost surely, 2^285081634 is an apocalyptic number.

285081634 is a deficient number, since it is larger than the sum of its proper divisors (144780254).

285081634 is a wasteful number, since it uses less digits than its factorization.

285081634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746480.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 285081634 is about 16884.3606334383. The cubic root of 285081634 is about 658.1472633504.

The spelling of 285081634 in words is "two hundred eighty-five million, eighty-one thousand, six hundred thirty-four".