78223107 has 8 divisors (see below), whose sum is σ = 104361984. Its totient is φ = 52116488.

The previous prime is 78223097. The next prime is 78223127. The reversal of 78223107 is 70132287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78223107 - 2²² = 74028803 is a prime.

It is a super-2 number, since 2×78223107² = 12237708937466898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78223127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 12620.

It is an arithmetic number, because the mean of its divisors is an integer number (13045248).

Almost surely, 2^78223107 is an apocalyptic number.

78223107 is a deficient number, since it is larger than the sum of its proper divisors (26138877).

78223107 is a wasteful number, since it uses less digits than its factorization.

78223107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16129.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 78223107 is about 8844.3827936154. The cubic root of 78223107 is about 427.6728564679.

The spelling of 78223107 in words is "seventy-eight million, two hundred twenty-three thousand, one hundred seven".