78260271 has 4 divisors (see below), whose sum is σ = 104347032. Its totient is φ = 52173512.

The previous prime is 78260269. The next prime is 78260309. The reversal of 78260271 is 17206287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78260271 - 2¹ = 78260269 is a prime.

It is a super-2 number, since 2×78260271² = 12249340033986882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78260201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13043376 + ... + 13043381.

It is an arithmetic number, because the mean of its divisors is an integer number (26086758).

Almost surely, 2^78260271 is an apocalyptic number.

78260271 is a deficient number, since it is larger than the sum of its proper divisors (26086761).

78260271 is a wasteful number, since it uses less digits than its factorization.

78260271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26086760.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 78260271 is about 8846.4835386723. The cubic root of 78260271 is about 427.7405752371.

The spelling of 78260271 in words is "seventy-eight million, two hundred sixty thousand, two hundred seventy-one".