78224283 has 6 divisors (see below), whose sum is σ = 112990644. Its totient is φ = 52149516.

The previous prime is 78224257. The next prime is 78224287. The reversal of 78224283 is 38242287.

It is not a de Polignac number, because 78224283 - 2⁹ = 78223771 is a prime.

It is a super-2 number, since 2×78224283² = 12238076901728178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78224287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4345785 + ... + 4345802.

It is an arithmetic number, because the mean of its divisors is an integer number (18831774).

Almost surely, 2^78224283 is an apocalyptic number.

78224283 is a deficient number, since it is larger than the sum of its proper divisors (34766361).

78224283 is a wasteful number, since it uses less digits than its factorization.

78224283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691593 (or 8691590 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 78224283 is about 8844.4492762410. The cubic root of 78224283 is about 427.6749996571.

The spelling of 78224283 in words is "seventy-eight million, two hundred twenty-four thousand, two hundred eighty-three".