78730127 has 16 divisors (see below), whose sum is σ = 96187392. Its totient is φ = 62969280.

The previous prime is 78730109. The next prime is 78730133. The reversal of 78730127 is 72103787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78730127 is a prime.

It is a super-2 number, since 2×78730127² = 12396865794872258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78730177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638 + ... + 12564.

It is an arithmetic number, because the mean of its divisors is an integer number (6011712).

Almost surely, 2^78730127 is an apocalyptic number.

78730127 is a deficient number, since it is larger than the sum of its proper divisors (17457265).

78730127 is a wasteful number, since it uses less digits than its factorization.

78730127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11998.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 78730127 is about 8872.9998872985. Note that the first 3 decimals coincide. The cubic root of 78730127 is about 428.5948852823.

The spelling of 78730127 in words is "seventy-eight million, seven hundred thirty thousand, one hundred twenty-seven".