78123283 has 8 divisors (see below), whose sum is σ = 89656160. Its totient is φ = 66683520.

The previous prime is 78123251. The next prime is 78123289. The reversal of 78123283 is 38232187.

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 78123283 - 2⁵ = 78123251 is a prime.

It is a super-2 number, since 2×78123283² = 12206494693396178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78123289) 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, 21468 + ... + 24841.

It is an arithmetic number, because the mean of its divisors is an integer number (11207020).

Almost surely, 2^78123283 is an apocalyptic number.

78123283 is a deficient number, since it is larger than the sum of its proper divisors (11532877).

78123283 is a wasteful number, since it uses less digits than its factorization.

78123283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46557.

The product of its digits is 16128, while the sum is 34.

The square root of 78123283 is about 8838.7376361107. The cubic root of 78123283 is about 427.4908548823.

The spelling of 78123283 in words is "seventy-eight million, one hundred twenty-three thousand, two hundred eighty-three".