40055312 has 40 divisors (see below), whose sum is σ = 86964672. Its totient is φ = 17712000.

The previous prime is 40055311. The next prime is 40055321. The reversal of 40055312 is 21355004.

It is not an unprimeable number, because it can be changed into a prime (40055311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3437 + ... + 9587.

Almost surely, 2^40055312 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 40055312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43482336).

40055312 is an abundant number, since it is smaller than the sum of its proper divisors (46909360).

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

40055312 is a wasteful number, since it uses less digits than its factorization.

40055312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207 (or 6201 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40055312 is about 6328.9266072534. The cubic root of 40055312 is about 342.1527537136.

The spelling of 40055312 in words is "forty million, fifty-five thousand, three hundred twelve".