20738164 has 24 divisors (see below), whose sum is σ = 38683008. Its totient is φ = 9694080.

The previous prime is 20738141. The next prime is 20738173. The reversal of 20738164 is 46183702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10149 + ... + 12019.

It is an arithmetic number, because the mean of its divisors is an integer number (1611792).

Almost surely, 2^20738164 is an apocalyptic number.

It is an amenable number.

20738164 is a deficient number, since it is larger than the sum of its proper divisors (17944844).

20738164 is a wasteful number, since it uses less digits than its factorization.

20738164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20738164 is about 4553.9174344733. The cubic root of 20738164 is about 274.7409748311.

It can be divided in two parts, 20738 and 164, that added together give a palindrome (20902).

The spelling of 20738164 in words is "twenty million, seven hundred thirty-eight thousand, one hundred sixty-four".