40978156 has 12 divisors (see below), whose sum is σ = 74025280. Its totient is φ = 19828080.

The previous prime is 40978151. The next prime is 40978159. The reversal of 40978156 is 65187904.

40978156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40978151) by changing a digit.

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, 165111 + ... + 165358.

Almost surely, 2^40978156 is an apocalyptic number.

It is an amenable number.

40978156 is a deficient number, since it is larger than the sum of its proper divisors (33047124).

40978156 is a wasteful number, since it uses less digits than its factorization.

40978156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330504 (or 330502 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 40978156 is about 6401.4182803501. The cubic root of 40978156 is about 344.7604750641.

The spelling of 40978156 in words is "forty million, nine hundred seventy-eight thousand, one hundred fifty-six".