40078312 has 16 divisors (see below), whose sum is σ = 75217860. Its totient is φ = 20020224.

The previous prime is 40078309. The next prime is 40078327. The reversal of 40078312 is 21387004.

40078312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38266596 + 1811716 = 6186^2 + 1346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11208 + ... + 14344.

Almost surely, 2^40078312 is an apocalyptic number.

It is an amenable number.

40078312 is a deficient number, since it is larger than the sum of its proper divisors (35139548).

40078312 is a wasteful number, since it uses less digits than its factorization.

40078312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740 (or 4736 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 40078312 is about 6330.7434002651. The cubic root of 40078312 is about 342.2182299029.

The spelling of 40078312 in words is "forty million, seventy-eight thousand, three hundred twelve".