40887878 has 4 divisors (see below), whose sum is σ = 61331820. Its totient is φ = 20443938.

The previous prime is 40887877. The next prime is 40887901. The reversal of 40887878 is 87878804.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40887871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221968 + ... + 10221971.

It is an arithmetic number, because the mean of its divisors is an integer number (15332955).

Almost surely, 2^40887878 is an apocalyptic number.

40887878 is a deficient number, since it is larger than the sum of its proper divisors (20443942).

40887878 is a wasteful number, since it uses less digits than its factorization.

40887878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20443941.

The product of its (nonzero) digits is 802816, while the sum is 50.

The square root of 40887878 is about 6394.3629862559. The cubic root of 40887878 is about 344.5071110477.

The spelling of 40887878 in words is "forty million, eight hundred eighty-seven thousand, eight hundred seventy-eight".