20771734 has 4 divisors (see below), whose sum is σ = 31157604. Its totient is φ = 10385866.

The previous prime is 20771713. The next prime is 20771747. The reversal of 20771734 is 43717702.

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

It is a junction number, because it is equal to n+sod(n) for n = 20771696 and 20771705.

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, 5192932 + ... + 5192935.

It is an arithmetic number, because the mean of its divisors is an integer number (7789401).

Almost surely, 2^20771734 is an apocalyptic number.

20771734 is a deficient number, since it is larger than the sum of its proper divisors (10385870).

20771734 is a wasteful number, since it uses less digits than its factorization.

20771734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385869.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 20771734 is about 4557.6017816391. The cubic root of 20771734 is about 274.8891409910.

The spelling of 20771734 in words is "twenty million, seven hundred seventy-one thousand, seven hundred thirty-four".