20284486 has 8 divisors (see below), whose sum is σ = 30509424. Its totient is φ = 10114680.

The previous prime is 20284471. The next prime is 20284501. The reversal of 20284486 is 68448202.

It is an interprime number because it is at equal distance from previous prime (20284471) and next prime (20284501).

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

It is a super-2 number, since 2×20284486² = 822920744568392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12850 + ... + 14341.

It is an arithmetic number, because the mean of its divisors is an integer number (3813678).

Almost surely, 2^20284486 is an apocalyptic number.

20284486 is a deficient number, since it is larger than the sum of its proper divisors (10224938).

20284486 is a wasteful number, since it uses less digits than its factorization.

20284486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27566.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 20284486 is about 4503.8301477742. The cubic root of 20284486 is about 272.7227301129.

The spelling of 20284486 in words is "twenty million, two hundred eighty-four thousand, four hundred eighty-six".