78283243 has 6 divisors (see below), whose sum is σ = 79180724. Its totient is φ = 77395824.

The previous prime is 78283199. The next prime is 78283253. The reversal of 78283243 is 34238287.

It is a happy number.

It is not a de Polignac number, because 78283243 - 2¹³ = 78275051 is a prime.

It is a super-2 number, since 2×78283243² = 12256532269194098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78283253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2980 + ... + 12862.

Almost surely, 2^78283243 is an apocalyptic number.

78283243 is a deficient number, since it is larger than the sum of its proper divisors (897481).

78283243 is an frugal number, since it uses more digits than its factorization.

78283243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10061 (or 9972 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 78283243 is about 8847.7818124093. The cubic root of 78283243 is about 427.7824231850.

The spelling of 78283243 in words is "seventy-eight million, two hundred eighty-three thousand, two hundred forty-three".