78227079 has 24 divisors (see below), whose sum is σ = 121710960. Its totient is φ = 44561664.

The previous prime is 78227069. The next prime is 78227089. The reversal of 78227079 is 97072287.

It is an interprime number because it is at equal distance from previous prime (78227069) and next prime (78227089).

It is not a de Polignac number, because 78227079 - 2²⁰ = 77178503 is a prime.

It is a super-2 number, since 2×78227079² = 12238951777744482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78227079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78227029) 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 23 ways as a sum of consecutive naturals, for example, 63037 + ... + 64265.

It is an arithmetic number, because the mean of its divisors is an integer number (5071290).

Almost surely, 2^78227079 is an apocalyptic number.

78227079 is a deficient number, since it is larger than the sum of its proper divisors (43483881).

78227079 is a wasteful number, since it uses less digits than its factorization.

78227079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 78227079 is about 8844.6073400689. The cubic root of 78227079 is about 427.6800951125.

The spelling of 78227079 in words is "seventy-eight million, two hundred twenty-seven thousand, seventy-nine".