40158878 has 8 divisors (see below), whose sum is σ = 61086960. Its totient is φ = 19796560.

The previous prime is 40158869. The next prime is 40158889. The reversal of 40158878 is 87885104.

40158878 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 super-2 number, since 2×40158878² = 3225470964437768, which contains 22 as substring.

It is a congruent number.

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, 141263 + ... + 141546.

It is an arithmetic number, because the mean of its divisors is an integer number (7635870).

Almost surely, 2^40158878 is an apocalyptic number.

40158878 is a deficient number, since it is larger than the sum of its proper divisors (20928082).

40158878 is a wasteful number, since it uses less digits than its factorization.

40158878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282882.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 40158878 is about 6337.1032814686. The cubic root of 40158878 is about 342.4473870912.

The spelling of 40158878 in words is "forty million, one hundred fifty-eight thousand, eight hundred seventy-eight".