40556064 has 24 divisors (see below), whose sum is σ = 106459920. Its totient is φ = 13518656.

The previous prime is 40556063. The next prime is 40556071. The reversal of 40556064 is 46065504.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (40556063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 211134 + ... + 211325.

It is an arithmetic number, because the mean of its divisors is an integer number (4435830).

Almost surely, 2^40556064 is an apocalyptic number.

It is an amenable number.

40556064 is an abundant number, since it is smaller than the sum of its proper divisors (65903856).

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

40556064 is a wasteful number, since it uses less digits than its factorization.

40556064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422472 (or 422464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40556064 is about 6368.3643111870. The cubic root of 40556064 is about 343.5726620712.

The spelling of 40556064 in words is "forty million, five hundred fifty-six thousand, sixty-four".