40628064 has 24 divisors (see below), whose sum is σ = 106648920. Its totient is φ = 13542656.

The previous prime is 40627997. The next prime is 40628083. The reversal of 40628064 is 46082604.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211509 + ... + 211700.

It is an arithmetic number, because the mean of its divisors is an integer number (4443705).

Almost surely, 2^40628064 is an apocalyptic number.

It is an amenable number.

40628064 is an abundant number, since it is smaller than the sum of its proper divisors (66020856).

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

40628064 is a wasteful number, since it uses less digits than its factorization.

40628064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423222 (or 423214 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40628064 is about 6374.0147473943. The cubic root of 40628064 is about 343.7758590354.

The spelling of 40628064 in words is "forty million, six hundred twenty-eight thousand, sixty-four".