78303273 has 8 divisors (see below), whose sum is σ = 105875136. Its totient is φ = 51466800.

The previous prime is 78303271. The next prime is 78303283. The reversal of 78303273 is 37230387.

It is a happy number.

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

It is not a de Polignac number, because 78303273 - 2¹ = 78303271 is a prime.

It is a super-2 number, since 2×78303273² = 12262805125025058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78303271) 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, 183598 + ... + 184023.

It is an arithmetic number, because the mean of its divisors is an integer number (13234392).

Almost surely, 2^78303273 is an apocalyptic number.

It is an amenable number.

78303273 is a deficient number, since it is larger than the sum of its proper divisors (27571863).

78303273 is a wasteful number, since it uses less digits than its factorization.

78303273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367695.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 78303273 is about 8848.9136621396. The cubic root of 78303273 is about 427.8189050293.

The spelling of 78303273 in words is "seventy-eight million, three hundred three thousand, two hundred seventy-three".