20202046 has 4 divisors (see below), whose sum is σ = 30303072. Its totient is φ = 10101022.

The previous prime is 20202031. The next prime is 20202071. The reversal of 20202046 is 64020202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64020202 = 2 ⋅32010101.

It is a super-2 number, since 2×20202046² = 816245325172232, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5050510 + ... + 5050513.

It is an arithmetic number, because the mean of its divisors is an integer number (7575768).

Almost surely, 2^20202046 is an apocalyptic number.

20202046 is a deficient number, since it is larger than the sum of its proper divisors (10101026).

20202046 is a wasteful number, since it uses less digits than its factorization.

20202046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101025.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20202046 is about 4494.6686195981. The cubic root of 20202046 is about 272.3527628125.

Adding to 20202046 its reverse (64020202), we get a palindrome (84222248).

The spelling of 20202046 in words is "twenty million, two hundred two thousand, forty-six".