78361269 has 8 divisors (see below), whose sum is σ = 119407680. Its totient is φ = 44777856.

The previous prime is 78361259. The next prime is 78361289. The reversal of 78361269 is 96216387.

It is a happy number.

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

It is not a de Polignac number, because 78361269 - 2⁵ = 78361237 is a prime.

It is a super-2 number, since 2×78361269² = 12280976958580722, 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 78361269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78361249) 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, 1865724 + ... + 1865765.

It is an arithmetic number, because the mean of its divisors is an integer number (14925960).

Almost surely, 2^78361269 is an apocalyptic number.

It is an amenable number.

78361269 is a deficient number, since it is larger than the sum of its proper divisors (41046411).

78361269 is a wasteful number, since it uses less digits than its factorization.

78361269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731499.

The product of its digits is 108864, while the sum is 42.

The square root of 78361269 is about 8852.1900680001. The cubic root of 78361269 is about 427.9245015606.

The spelling of 78361269 in words is "seventy-eight million, three hundred sixty-one thousand, two hundred sixty-nine".