282720645 has 16 divisors (see below), whose sum is σ = 502614720. Its totient is φ = 150784272.

The previous prime is 282720631. The next prime is 282720653. The reversal of 282720645 is 546027282.

282720645 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 2 + 0 + 645 = 666.

It is not a de Polignac number, because 282720645 - 2⁴ = 282720629 is a prime.

It is a congruent number.

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, 1046979 + ... + 1047248.

It is an arithmetic number, because the mean of its divisors is an integer number (31413420).

Almost surely, 2^282720645 is an apocalyptic number.

It is an amenable number.

282720645 is a deficient number, since it is larger than the sum of its proper divisors (219894075).

282720645 is a wasteful number, since it uses less digits than its factorization.

282720645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094241 (or 2094235 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 282720645 is about 16814.2988257019. The cubic root of 282720645 is about 656.3253431864.

The spelling of 282720645 in words is "two hundred eighty-two million, seven hundred twenty thousand, six hundred forty-five".