282397650921 has 27 divisors (see below), whose sum is σ = 430552665309. Its totient is φ = 178337280312.

The previous prime is 282397650881. The next prime is 282397650923. The reversal of 282397650921 is 129056793282.

The square root of 282397650921 is 531411.

It is a perfect power (a square), and thus also a powerful number.

282397650921 is a `hidden beast` number, since 2 + 8 + 23 + 97 + 6 + 509 + 21 = 666.

It is not a de Polignac number, because 282397650921 - 2⁷ = 282397650793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (282397650923) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 30285766 + ... + 30295088.

Almost surely, 2^282397650921 is an apocalyptic number.

282397650921 is the 531411-st square number.

282397650921 is the 265706-th centered octagonal number.

It is an amenable number.

282397650921 is a deficient number, since it is larger than the sum of its proper divisors (148155014388).

282397650921 is an frugal number, since it uses more digits than its factorization.

282397650921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18690 (or 9345 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 282397650921 in words is "two hundred eighty-two billion, three hundred ninety-seven million, six hundred fifty thousand, nine hundred twenty-one".