20471734 has 4 divisors (see below), whose sum is σ = 30707604. Its totient is φ = 10235866.

The previous prime is 20471719. The next prime is 20471747. The reversal of 20471734 is 43717402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5117932 + ... + 5117935.

It is an arithmetic number, because the mean of its divisors is an integer number (7676901).

Almost surely, 2^20471734 is an apocalyptic number.

20471734 is a deficient number, since it is larger than the sum of its proper divisors (10235870).

20471734 is a wasteful number, since it uses less digits than its factorization.

20471734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10235869.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20471734 is about 4524.5700348210. The cubic root of 20471734 is about 273.5593375015.

The spelling of 20471734 in words is "twenty million, four hundred seventy-one thousand, seven hundred thirty-four".