78229884 has 12 divisors (see below), whose sum is σ = 182536424. Its totient is φ = 26076624.

The previous prime is 78229867. The next prime is 78229891. The reversal of 78229884 is 48892287.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78229884² = 12239829501306912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3259567 + ... + 3259590.

Almost surely, 2^78229884 is an apocalyptic number.

It is an amenable number.

78229884 is an abundant number, since it is smaller than the sum of its proper divisors (104306540).

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

78229884 is a wasteful number, since it uses less digits than its factorization.

78229884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519164 (or 6519162 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 78229884 is about 8844.7659098475. The cubic root of 78229884 is about 427.6852068477.

The spelling of 78229884 in words is "seventy-eight million, two hundred twenty-nine thousand, eight hundred eighty-four".