78219696 has 40 divisors (see below), whose sum is σ = 208589824. Its totient is φ = 25231680.

The previous prime is 78219689. The next prime is 78219721. The reversal of 78219696 is 69691287.

It is a super-2 number, since 2×78219696² = 12236641684664832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 24796 + ... + 27771.

Almost surely, 2^78219696 is an apocalyptic number.

It is an amenable number.

78219696 is an abundant number, since it is smaller than the sum of its proper divisors (130370128).

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

78219696 is a wasteful number, since it uses less digits than its factorization.

78219696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52609 (or 52603 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 78219696 is about 8844.1899572544. The cubic root of 78219696 is about 427.6666400041. Note that the first 4 decimals are identical.

The spelling of 78219696 in words is "seventy-eight million, two hundred nineteen thousand, six hundred ninety-six".