78352843 has 4 divisors (see below), whose sum is σ = 78871888. Its totient is φ = 77833800.

The previous prime is 78352811. The next prime is 78352919. The reversal of 78352843 is 34825387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78352843 - 2⁵ = 78352811 is a prime.

It is a super-2 number, since 2×78352843² = 12278336012365298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78352796 and 78352805.

It is not an unprimeable number, because it can be changed into a prime (78352343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259296 + ... + 259597.

It is an arithmetic number, because the mean of its divisors is an integer number (19717972).

Almost surely, 2^78352843 is an apocalyptic number.

78352843 is a deficient number, since it is larger than the sum of its proper divisors (519045).

78352843 is a wasteful number, since it uses less digits than its factorization.

78352843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519044.

The product of its digits is 161280, while the sum is 40.

The square root of 78352843 is about 8851.7141277834. The cubic root of 78352843 is about 427.9091631111.

The spelling of 78352843 in words is "seventy-eight million, three hundred fifty-two thousand, eight hundred forty-three".