20748846 has 16 divisors (see below), whose sum is σ = 41778000. Its totient is φ = 6869568.

The previous prime is 20748841. The next prime is 20748853. The reversal of 20748846 is 64884702.

It is a super-2 number, since 2×20748846² = 861029220663432, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20748841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10711 + ... + 12498.

It is an arithmetic number, because the mean of its divisors is an integer number (2611125).

Almost surely, 2^20748846 is an apocalyptic number.

20748846 is an abundant number, since it is smaller than the sum of its proper divisors (21029154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20748846 is a wasteful number, since it uses less digits than its factorization.

20748846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23363.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 20748846 is about 4555.0901198549. The cubic root of 20748846 is about 274.7881387514.

The spelling of 20748846 in words is "twenty million, seven hundred forty-eight thousand, eight hundred forty-six".