282320146 has 4 divisors (see below), whose sum is σ = 423480222. Its totient is φ = 141160072.

The previous prime is 282320123. The next prime is 282320177. The reversal of 282320146 is 641023282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641023282 = 2 ⋅320511641.

It can be written as a sum of positive squares in only one way, i.e., 280730025 + 1590121 = 16755^2 + 1261^2 .

It is a super-2 number, since 2×282320146² = 159409329674922632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70580035 + ... + 70580038.

Almost surely, 2^282320146 is an apocalyptic number.

282320146 is a deficient number, since it is larger than the sum of its proper divisors (141160076).

282320146 is a wasteful number, since it uses less digits than its factorization.

282320146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141160075.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 282320146 is about 16802.3851283084. The cubic root of 282320146 is about 656.0152822758.

The spelling of 282320146 in words is "two hundred eighty-two million, three hundred twenty thousand, one hundred forty-six".