20284708 has 6 divisors (see below), whose sum is σ = 35498246. Its totient is φ = 10142352.

The previous prime is 20284699. The next prime is 20284727. The reversal of 20284708 is 80748202.

It can be written as a sum of positive squares in only one way, i.e., 17489124 + 2795584 = 4182^2 + 1672^2 .

It is a super-2 number, since 2×20284708² = 822938757290528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20284708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2535585 + ... + 2535592.

Almost surely, 2^20284708 is an apocalyptic number.

It is an amenable number.

20284708 is a deficient number, since it is larger than the sum of its proper divisors (15213538).

20284708 is a wasteful number, since it uses less digits than its factorization.

20284708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071181 (or 5071179 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 20284708 is about 4503.8547933964. The cubic root of 20284708 is about 272.7237250313.

The spelling of 20284708 in words is "twenty million, two hundred eighty-four thousand, seven hundred eight".