40508064 has 72 divisors (see below), whose sum is σ = 117909792. Its totient is φ = 13184640.

The previous prime is 40508053. The next prime is 40508077. The reversal of 40508064 is 46080504.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10749 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (1637636).

Almost surely, 2^40508064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40508064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58954896).

40508064 is an abundant number, since it is smaller than the sum of its proper divisors (77401728).

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

40508064 is a wasteful number, since it uses less digits than its factorization.

40508064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330 (or 3319 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40508064 is about 6364.5945668204. The cubic root of 40508064 is about 343.4370637859.

Adding to 40508064 its reverse (46080504), we get a palindrome (86588568).

The spelling of 40508064 in words is "forty million, five hundred eight thousand, sixty-four".