20461282 has 4 divisors (see below), whose sum is σ = 30691926. Its totient is φ = 10230640.

The previous prime is 20461279. The next prime is 20461297. The reversal of 20461282 is 28216402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28216402 = 2 ⋅14108201.

It can be written as a sum of positive squares in only one way, i.e., 14600041 + 5861241 = 3821^2 + 2421^2 .

It is a super-2 number, since 2×20461282² = 837328122167048, 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, 5115319 + ... + 5115322.

Almost surely, 2^20461282 is an apocalyptic number.

20461282 is a deficient number, since it is larger than the sum of its proper divisors (10230644).

20461282 is a wasteful number, since it uses less digits than its factorization.

20461282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10230643.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20461282 is about 4523.4148604788. The cubic root of 20461282 is about 273.5127736404.

Adding to 20461282 its reverse (28216402), we get a palindrome (48677684).

The spelling of 20461282 in words is "twenty million, four hundred sixty-one thousand, two hundred eighty-two".