20178064 has 15 divisors (see below), whose sum is σ = 39129843. Its totient is φ = 10080048.

The previous prime is 20178049. The next prime is 20178077. The reversal of 20178064 is 46087102.

The square root of 20178064 is 4492.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17407 + ... + 18529.

Almost surely, 2^20178064 is an apocalyptic number.

20178064 is the 4492-nd square number.

It is an amenable number.

20178064 is a deficient number, since it is larger than the sum of its proper divisors (18951779).

20178064 is an frugal number, since it uses more digits than its factorization.

20178064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The cubic root of 20178064 is about 272.2449494715.

It can be divided in two parts, 20 and 178064, that added together give a square (178084 = 422²).

The spelling of 20178064 in words is "twenty million, one hundred seventy-eight thousand, sixty-four".