20470934 has 16 divisors (see below), whose sum is σ = 33567696. Its totient is φ = 9285600.

The previous prime is 20470889. The next prime is 20470939. The reversal of 20470934 is 43907402.

It is a junction number, because it is equal to n+sod(n) for n = 20470897 and 20470906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470939) 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, 18764 + ... + 19824.

It is an arithmetic number, because the mean of its divisors is an integer number (2097981).

Almost surely, 2^20470934 is an apocalyptic number.

20470934 is a deficient number, since it is larger than the sum of its proper divisors (13096762).

20470934 is a wasteful number, since it uses less digits than its factorization.

20470934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20470934 is about 4524.4816277669. The cubic root of 20470934 is about 273.5557740463. Note that the first 3 decimals are identical.

The spelling of 20470934 in words is "twenty million, four hundred seventy thousand, nine hundred thirty-four".