20215282 has 12 divisors (see below), whose sum is σ = 30754890. Its totient is φ = 9964416.

The previous prime is 20215267. The next prime is 20215301. The reversal of 20215282 is 28251202.

It can be written as a sum of positive squares in 3 ways, for example, as 9853321 + 10361961 = 3139^2 + 3219^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59818 + ... + 60154.

Almost surely, 2^20215282 is an apocalyptic number.

20215282 is a deficient number, since it is larger than the sum of its proper divisors (10539608).

20215282 is an frugal number, since it uses more digits than its factorization.

20215282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20215282 is about 4496.1407896106. The cubic root of 20215282 is about 272.4122299604.

Adding to 20215282 its reverse (28251202), we get a palindrome (48466484).

The spelling of 20215282 in words is "twenty million, two hundred fifteen thousand, two hundred eighty-two".