64031040 has 112 divisors (see below), whose sum is σ = 225917760. Its totient is φ = 17072640.

The previous prime is 64031039. The next prime is 64031059. The reversal of 64031040 is 4013046.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4935 + ... + 12345.

Almost surely, 2^64031040 is an apocalyptic number.

64031040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112958880).

64031040 is an abundant number, since it is smaller than the sum of its proper divisors (161886720).

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

64031040 is a wasteful number, since it uses less digits than its factorization.

64031040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437 (or 7421 counting only the distinct ones).

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

The square root of 64031040 is about 8001.9397648320. The cubic root of 64031040 is about 400.0646562150.

Adding to 64031040 its reverse (4013046), we get a palindrome (68044086).

The spelling of 64031040 in words is "sixty-four million, thirty-one thousand, forty".