40056012 has 48 divisors (see below), whose sum is σ = 109962720. Its totient is φ = 12566016.

The previous prime is 40056011. The next prime is 40056013. The reversal of 40056012 is 21065004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40056011) and next prime (40056013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40056011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9073 + ... + 12744.

It is an arithmetic number, because the mean of its divisors is an integer number (2290890).

Almost surely, 2^40056012 is an apocalyptic number.

It is an amenable number.

40056012 is an abundant number, since it is smaller than the sum of its proper divisors (69906708).

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

40056012 is a wasteful number, since it uses less digits than its factorization.

40056012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21847 (or 21839 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40056012 is about 6328.9819086485. The cubic root of 40056012 is about 342.1547468369.

The spelling of 40056012 in words is "forty million, fifty-six thousand, twelve".