78220299 has 8 divisors (see below), whose sum is σ = 104343552. Its totient is φ = 52121960.

The previous prime is 78220297. The next prime is 78220313. The reversal of 78220299 is 99202287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78220299 - 2¹ = 78220297 is a prime.

It is a super-3 number, since 3×78220299³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78220291) 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 7 ways as a sum of consecutive naturals, for example, 3094 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (13042944).

Almost surely, 2^78220299 is an apocalyptic number.

78220299 is a deficient number, since it is larger than the sum of its proper divisors (26123253).

78220299 is a wasteful number, since it uses less digits than its factorization.

78220299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12457.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 78220299 is about 8844.2240473656. The cubic root of 78220299 is about 427.6677389700.

The spelling of 78220299 in words is "seventy-eight million, two hundred twenty thousand, two hundred ninety-nine".