40238064 has 30 divisors (see below), whose sum is σ = 112611096. Its totient is φ = 13412640.

The previous prime is 40238047. The next prime is 40238069. The reversal of 40238064 is 46083204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40238069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139572 + ... + 139859.

Almost surely, 2^40238064 is an apocalyptic number.

It is an amenable number.

40238064 is an abundant number, since it is smaller than the sum of its proper divisors (72373032).

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

40238064 is a wasteful number, since it uses less digits than its factorization.

40238064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279445 (or 279436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40238064 is about 6343.3480118940. The cubic root of 40238064 is about 342.6723206248.

The spelling of 40238064 in words is "forty million, two hundred thirty-eight thousand, sixty-four".