7878016 has 16 divisors (see below), whose sum is σ = 15694740. Its totient is φ = 3938944.

The previous prime is 7878011. The next prime is 7878019. The reversal of 7878016 is 6108787.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30646 + ... + 30901.

Almost surely, 2^7878016 is an apocalyptic number.

It is an amenable number.

7878016 is a deficient number, since it is larger than the sum of its proper divisors (7816724).

7878016 is an equidigital number, since it uses as much as digits as its factorization.

7878016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61561 (or 61549 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 7878016 is about 2806.7803619094. The cubic root of 7878016 is about 198.9782557489.

The spelling of 7878016 in words is "seven million, eight hundred seventy-eight thousand, sixteen".