40078 has 8 divisors (see below), whose sum is σ = 62280. Its totient is φ = 19320.

The previous prime is 40063. The next prime is 40087. The reversal of 40078 is 87004.

It is a happy number.

40078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

40078 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (7785).

2⁴⁰⁰⁷⁸ is an apocalyptic number.

40078 is a deficient number, since it is larger than the sum of its proper divisors (22202).

40078 is a wasteful number, since it uses less digits than its factorization.

40078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 40078 is about 200.1949050301. The cubic root of 40078 is about 34.2217341872.

The spelling of 40078 in words is "forty thousand, seventy-eight".