40078156 has 12 divisors (see below), whose sum is σ = 71847720. Its totient is φ = 19550240.

The previous prime is 40078147. The next prime is 40078219. The reversal of 40078156 is 65187004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122026 + ... + 122353.

It is an arithmetic number, because the mean of its divisors is an integer number (5987310).

Almost surely, 2^40078156 is an apocalyptic number.

It is an amenable number.

40078156 is a deficient number, since it is larger than the sum of its proper divisors (31769564).

40078156 is a wasteful number, since it uses less digits than its factorization.

40078156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244424 (or 244422 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 40078156 is about 6330.7310794252. The cubic root of 40078156 is about 342.2177858879.

The spelling of 40078156 in words is "forty million, seventy-eight thousand, one hundred fifty-six".