64304838 has 36 divisors (see below), whose sum is σ = 150876180. Its totient is φ = 19785168.

The previous prime is 64304837. The next prime is 64304843. The reversal of 64304838 is 83840346.

64304838 is a `hidden beast` number, since 643 + 0 + 4 + 8 + 3 + 8 = 666.

It is a super-2 number, since 2×64304838² = 8270224380412488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64304837) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7528 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (4191005).

Almost surely, 2^64304838 is an apocalyptic number.

64304838 is an abundant number, since it is smaller than the sum of its proper divisors (86571342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64304838 is a wasteful number, since it uses less digits than its factorization.

64304838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21173 (or 21157 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 64304838 is about 8019.0297418079. The cubic root of 64304838 is about 400.6340735125.

The spelling of 64304838 in words is "sixty-four million, three hundred four thousand, eight hundred thirty-eight".