78244 has 12 divisors (see below), whose sum is σ = 141568. Its totient is φ = 37800.

The previous prime is 78241. The next prime is 78259. The reversal of 78244 is 44287.

It is a super-2 number, since 2×78244² = 12244247072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192 + ... + 439.

2⁷⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

78244 is a deficient number, since it is larger than the sum of its proper divisors (63324).

78244 is a wasteful number, since it uses less digits than its factorization.

78244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 664 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 78244 is about 279.7212898583. The cubic root of 78244 is about 42.7710929504.

The spelling of 78244 in words is "seventy-eight thousand, two hundred forty-four".