20284834 has 8 divisors (see below), whose sum is σ = 30741228. Its totient is φ = 10037760.

The previous prime is 20284813. The next prime is 20284841. The reversal of 20284834 is 43848202.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 455625 = 4453^2 + 675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20284834² = 822948980815112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20284796 and 20284805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52087 + ... + 52474.

Almost surely, 2^20284834 is an apocalyptic number.

20284834 is a deficient number, since it is larger than the sum of its proper divisors (10456394).

20284834 is a wasteful number, since it uses less digits than its factorization.

20284834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104660.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 20284834 is about 4503.8687813923. The cubic root of 20284834 is about 272.7242897115.

The spelling of 20284834 in words is "twenty million, two hundred eighty-four thousand, eight hundred thirty-four".