40064868 has 72 divisors (see below), whose sum is σ = 107382912. Its totient is φ = 13055904.

The previous prime is 40064867. The next prime is 40064887. The reversal of 40064868 is 86846004.

40064868 is a `hidden beast` number, since 4 + 0 + 0 + 648 + 6 + 8 = 666.

40064868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40064867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45246 + ... + 46122.

Almost surely, 2^40064868 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 40064868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53691456).

40064868 is an abundant number, since it is smaller than the sum of its proper divisors (67318044).

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

40064868 is a wasteful number, since it uses less digits than its factorization.

40064868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 40064868 is about 6329.6815085753. The cubic root of 40064868 is about 342.1799606896.

The spelling of 40064868 in words is "forty million, sixty-four thousand, eight hundred sixty-eight".