7800216 has 16 divisors (see below), whose sum is σ = 19500600. Its totient is φ = 2600064.

The previous prime is 7800211. The next prime is 7800259. The reversal of 7800216 is 6120087.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 325009 = 7800216 / (7 + 8 + 0 + 0 + 2 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7800211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 162481 + ... + 162528.

Almost surely, 2^7800216 is an apocalyptic number.

It is an amenable number.

7800216 is an abundant number, since it is smaller than the sum of its proper divisors (11700384).

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

7800216 is a wasteful number, since it uses less digits than its factorization.

7800216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325018 (or 325014 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 7800216 is about 2792.8866786893. The cubic root of 7800216 is about 198.3210788904.

The spelling of 7800216 in words is "seven million, eight hundred thousand, two hundred sixteen".