64234040 has 32 divisors (see below), whose sum is σ = 155645280. Its totient is φ = 23716992.

The previous prime is 64234033. The next prime is 64234061. The reversal of 64234040 is 4043246.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64233997 and 64234015.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 61244 + ... + 62283.

It is an arithmetic number, because the mean of its divisors is an integer number (4863915).

Almost surely, 2^64234040 is an apocalyptic number.

It is an amenable number.

64234040 is an abundant number, since it is smaller than the sum of its proper divisors (91411240).

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

64234040 is a wasteful number, since it uses less digits than its factorization.

64234040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123551 (or 123547 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 64234040 is about 8014.6141516607. The cubic root of 64234040 is about 400.4869901941.

Adding to 64234040 its reverse (4043246), we get a palindrome (68277286).

The spelling of 64234040 in words is "sixty-four million, two hundred thirty-four thousand, forty".