78361329 has 8 divisors (see below), whose sum is σ = 104620032. Its totient is φ = 52171760.

The previous prime is 78361321. The next prime is 78361337. The reversal of 78361329 is 92316387.

It is an interprime number because it is at equal distance from previous prime (78361321) and next prime (78361337).

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 78361329 - 2³ = 78361321 is a prime.

It is a super-2 number, since 2×78361329² = 12280995765292482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78361321) 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, 14577 + ... + 19214.

It is an arithmetic number, because the mean of its divisors is an integer number (13077504).

Almost surely, 2^78361329 is an apocalyptic number.

It is an amenable number.

78361329 is a deficient number, since it is larger than the sum of its proper divisors (26258703).

78361329 is a wasteful number, since it uses less digits than its factorization.

78361329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34567.

The product of its digits is 54432, while the sum is 39.

The square root of 78361329 is about 8852.1934569913. The cubic root of 78361329 is about 427.9246107789.

The spelling of 78361329 in words is "seventy-eight million, three hundred sixty-one thousand, three hundred twenty-nine".