20474934 has 8 divisors (see below), whose sum is σ = 40949880. Its totient is φ = 6824976.

The previous prime is 20474929. The next prime is 20474969. The reversal of 20474934 is 43947402.

It is a sphenic number, since it is the product of 3 distinct primes.

20474934 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20474895 and 20474904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706239 + ... + 1706250.

It is an arithmetic number, because the mean of its divisors is an integer number (5118735).

Almost surely, 2^20474934 is an apocalyptic number.

20474934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20474934 is a wasteful number, since it uses less digits than its factorization.

20474934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412494.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20474934 is about 4524.9236457646. The cubic root of 20474934 is about 273.5735903940.

The spelling of 20474934 in words is "twenty million, four hundred seventy-four thousand, nine hundred thirty-four".