78328283 has 8 divisors (see below), whose sum is σ = 85522800. Its totient is φ = 71146080.

The previous prime is 78328259. The next prime is 78328301. The reversal of 78328283 is 38282387.

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 78328283 - 2⁶ = 78328219 is a prime.

It is a super-2 number, since 2×78328283² = 12270639835456178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78328283.

It is not an unprimeable number, because it can be changed into a prime (78328253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14741 + ... + 19337.

It is an arithmetic number, because the mean of its divisors is an integer number (10690350).

Almost surely, 2^78328283 is an apocalyptic number.

78328283 is a deficient number, since it is larger than the sum of its proper divisors (7194517).

78328283 is a wasteful number, since it uses less digits than its factorization.

78328283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157.

The product of its digits is 129024, while the sum is 41.

The square root of 78328283 is about 8850.3267171331. The cubic root of 78328283 is about 427.8644485144.

The spelling of 78328283 in words is "seventy-eight million, three hundred twenty-eight thousand, two hundred eighty-three".