7918216 has 8 divisors (see below), whose sum is σ = 14846670. Its totient is φ = 3959104.

The previous prime is 7918201. The next prime is 7918223. The reversal of 7918216 is 6128197.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 1313316 = 2570^2 + 1146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494881 + ... + 494896.

Almost surely, 2^7918216 is an apocalyptic number.

It is an amenable number.

7918216 is a deficient number, since it is larger than the sum of its proper divisors (6928454).

7918216 is a wasteful number, since it uses less digits than its factorization.

7918216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989783 (or 989779 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 7918216 is about 2813.9324796448. The cubic root of 7918216 is about 199.3161309475.

The spelling of 7918216 in words is "seven million, nine hundred eighteen thousand, two hundred sixteen".