20470838 has 16 divisors (see below), whose sum is σ = 31739136. Its totient is φ = 9896040.

The previous prime is 20470837. The next prime is 20470841. The reversal of 20470838 is 83807402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7703 + ... + 10013.

It is an arithmetic number, because the mean of its divisors is an integer number (1983696).

Almost surely, 2^20470838 is an apocalyptic number.

20470838 is a deficient number, since it is larger than the sum of its proper divisors (11268298).

20470838 is a wasteful number, since it uses less digits than its factorization.

20470838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20470838 is about 4524.4710188043. The cubic root of 20470838 is about 273.5553464254. Note that the first 3 decimals are identical.

The spelling of 20470838 in words is "twenty million, four hundred seventy thousand, eight hundred thirty-eight".