40878216 has 32 divisors (see below), whose sum is σ = 113551200. Its totient is φ = 13626000.

The previous prime is 40878143. The next prime is 40878221. The reversal of 40878216 is 61287804.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94410 + ... + 94841.

It is an arithmetic number, because the mean of its divisors is an integer number (3548475).

Almost surely, 2^40878216 is an apocalyptic number.

It is an amenable number.

40878216 is an abundant number, since it is smaller than the sum of its proper divisors (72672984).

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

40878216 is a wasteful number, since it uses less digits than its factorization.

40878216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189266 (or 189256 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 40878216 is about 6393.6074324281. The cubic root of 40878216 is about 344.4799726871.

The spelling of 40878216 in words is "forty million, eight hundred seventy-eight thousand, two hundred sixteen".