64738238 has 16 divisors (see below), whose sum is σ = 101799936. Its totient is φ = 30818040.

The previous prime is 64738229. The next prime is 64738241. The reversal of 64738238 is 83283746.

It is a junction number, because it is equal to n+sod(n) for n = 64738195 and 64738204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7103 + ... + 13413.

It is an arithmetic number, because the mean of its divisors is an integer number (6362496).

Almost surely, 2^64738238 is an apocalyptic number.

64738238 is a deficient number, since it is larger than the sum of its proper divisors (37061698).

64738238 is a wasteful number, since it uses less digits than its factorization.

64738238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6559.

The product of its digits is 193536, while the sum is 41.

The square root of 64738238 is about 8046.0075814033. The cubic root of 64738238 is about 401.5321198625.

The spelling of 64738238 in words is "sixty-four million, seven hundred thirty-eight thousand, two hundred thirty-eight".