64040310 has 48 divisors (see below), whose sum is σ = 168530544. Its totient is φ = 16869696.

The previous prime is 64040299. The next prime is 64040329. The reversal of 64040310 is 1304046.

It is a super-2 number, since 2×64040310² = 8202322609792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3184 + ... + 11756.

It is an arithmetic number, because the mean of its divisors is an integer number (3511053).

Almost surely, 2^64040310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64040310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84265272).

64040310 is an abundant number, since it is smaller than the sum of its proper divisors (104490234).

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

64040310 is a wasteful number, since it uses less digits than its factorization.

64040310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8669 (or 8666 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 64040310 is about 8002.5189784217. The cubic root of 64040310 is about 400.0839615416.

Adding to 64040310 its reverse (1304046), we get a palindrome (65344356).

The spelling of 64040310 in words is "sixty-four million, forty thousand, three hundred ten".