78262271 has 8 divisors (see below), whose sum is σ = 85723920. Its totient is φ = 71118208.

The previous prime is 78262241. The next prime is 78262319. The reversal of 78262271 is 17226287.

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

It is not a de Polignac number, because 78262271 - 2¹⁴ = 78245887 is a prime.

It is a super-2 number, since 2×78262271² = 12249966124154882, 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 (78262241) 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, 78881 + ... + 79866.

It is an arithmetic number, because the mean of its divisors is an integer number (10715490).

Almost surely, 2^78262271 is an apocalyptic number.

78262271 is a deficient number, since it is larger than the sum of its proper divisors (7461649).

78262271 is a wasteful number, since it uses less digits than its factorization.

78262271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158793.

The product of its digits is 18816, while the sum is 35.

The square root of 78262271 is about 8846.5965772154. The cubic root of 78262271 is about 427.7442189500.

The spelling of 78262271 in words is "seventy-eight million, two hundred sixty-two thousand, two hundred seventy-one".