78319353 has 8 divisors (see below), whose sum is σ = 119343808. Its totient is φ = 44753904.

The previous prime is 78319337. The next prime is 78319363. The reversal of 78319353 is 35391387.

Added to its reverse (35391387) it gives a triangular number (113710740 = T₁₅₀₈₀).

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

It is not a de Polignac number, because 78319353 - 2⁴ = 78319337 is a prime.

It is a super-2 number, since 2×78319353² = 12267842108677218, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78319363) 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, 1864726 + ... + 1864767.

It is an arithmetic number, because the mean of its divisors is an integer number (14917976).

Almost surely, 2^78319353 is an apocalyptic number.

It is an amenable number.

78319353 is a deficient number, since it is larger than the sum of its proper divisors (41024455).

78319353 is a wasteful number, since it uses less digits than its factorization.

78319353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729503.

The product of its digits is 68040, while the sum is 39.

The square root of 78319353 is about 8849.8222016038. The cubic root of 78319353 is about 427.8481879991.

Adding to 78319353 its reverse (35391387), we get a triangular number (113710740 = T₁₅₀₈₀).

The spelling of 78319353 in words is "seventy-eight million, three hundred nineteen thousand, three hundred fifty-three".