78534269 has 8 divisors (see below), whose sum is σ = 85798560. Its totient is φ = 71290800.

The previous prime is 78534263. The next prime is 78534283. The reversal of 78534269 is 96243587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78534269 is a prime.

It is a super-2 number, since 2×78534269² = 12335262814728722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78534263) 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, 3299 + ... + 12959.

It is an arithmetic number, because the mean of its divisors is an integer number (10724820).

Almost surely, 2^78534269 is an apocalyptic number.

It is an amenable number.

78534269 is a deficient number, since it is larger than the sum of its proper divisors (7264291).

78534269 is a wasteful number, since it uses less digits than its factorization.

78534269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411.

The product of its digits is 362880, while the sum is 44.

The square root of 78534269 is about 8861.9562738709. The cubic root of 78534269 is about 428.2391830628.

The spelling of 78534269 in words is "seventy-eight million, five hundred thirty-four thousand, two hundred sixty-nine".