78152223 has 8 divisors (see below), whose sum is σ = 104256000. Its totient is φ = 52074968.

The previous prime is 78152201. The next prime is 78152257. The reversal of 78152223 is 32225187.

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 78152223 - 2⁸ = 78151967 is a prime.

It is a super-2 number, since 2×78152223² = 12215539919683458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78152323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 12626.

It is an arithmetic number, because the mean of its divisors is an integer number (13032000).

Almost surely, 2^78152223 is an apocalyptic number.

78152223 is a deficient number, since it is larger than the sum of its proper divisors (26103777).

78152223 is a wasteful number, since it uses less digits than its factorization.

78152223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261.

The product of its digits is 6720, while the sum is 30.

The square root of 78152223 is about 8840.3745961356. The cubic root of 78152223 is about 427.5436349564.

The spelling of 78152223 in words is "seventy-eight million, one hundred fifty-two thousand, two hundred twenty-three".