282157988 has 12 divisors (see below), whose sum is σ = 564316032. Its totient is φ = 120924840.

The previous prime is 282157963. The next prime is 282157991. The reversal of 282157988 is 889751282.

It is a happy number.

282157988 is an admirable number.

It is a super-2 number, since 2×282157988² = 159226260384416288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038508 + ... + 5038563.

It is an arithmetic number, because the mean of its divisors is an integer number (47026336).

Almost surely, 2^282157988 is an apocalyptic number.

282157988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

282157988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

282157988 is a wasteful number, since it uses less digits than its factorization.

282157988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077082 (or 10077080 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 282157988 is about 16797.5589893294. The cubic root of 282157988 is about 655.8896583448.

The spelling of 282157988 in words is "two hundred eighty-two million, one hundred fifty-seven thousand, nine hundred eighty-eight".