20286802 has 4 divisors (see below), whose sum is σ = 30430206. Its totient is φ = 10143400.

The previous prime is 20286793. The next prime is 20286811. The reversal of 20286802 is 20868202.

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: 20868202 = 2 ⋅10434101.

It is an interprime number because it is at equal distance from previous prime (20286793) and next prime (20286811).

It can be written as a sum of positive squares in only one way, i.e., 19616041 + 670761 = 4429^2 + 819^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5071699 + ... + 5071702.

Almost surely, 2^20286802 is an apocalyptic number.

20286802 is a deficient number, since it is larger than the sum of its proper divisors (10143404).

20286802 is a wasteful number, since it uses less digits than its factorization.

20286802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143403.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20286802 is about 4504.0872549275. The cubic root of 20286802 is about 272.7331091748.

The spelling of 20286802 in words is "twenty million, two hundred eighty-six thousand, eight hundred two".