40878838 has 48 divisors (see below), whose sum is σ = 83828304. Its totient is φ = 14696640.

The previous prime is 40878833. The next prime is 40878881. The reversal of 40878838 is 83887804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40878833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12556 + ... + 15472.

It is an arithmetic number, because the mean of its divisors is an integer number (1746423).

Almost surely, 2^40878838 is an apocalyptic number.

40878838 is an abundant number, since it is smaller than the sum of its proper divisors (42949466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40878838 is a wasteful number, since it uses less digits than its factorization.

40878838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 40878838 is about 6393.6560745789. The cubic root of 40878838 is about 344.4817198724.

It can be divided in two parts, 40 and 878838, that added together give a palindrome (878878).

The spelling of 40878838 in words is "forty million, eight hundred seventy-eight thousand, eight hundred thirty-eight".