78862216 has 32 divisors (see below), whose sum is σ = 156623040. Its totient is φ = 37147968.

The previous prime is 78862169. The next prime is 78862219. The reversal of 78862216 is 61226887.

It is a super-2 number, since 2×78862216² = 12438498224861312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78862219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9130 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (4894470).

Almost surely, 2^78862216 is an apocalyptic number.

It is an amenable number.

78862216 is a deficient number, since it is larger than the sum of its proper divisors (77760824).

78862216 is a wasteful number, since it uses less digits than its factorization.

78862216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493 (or 6489 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 78862216 is about 8880.4400791853. The cubic root of 78862216 is about 428.8344421961.

The spelling of 78862216 in words is "seventy-eight million, eight hundred sixty-two thousand, two hundred sixteen".