71072278 has 8 divisors (see below), whose sum is σ = 108110160. Its totient is φ = 35035560.

The previous prime is 71072273. The next prime is 71072279. The reversal of 71072278 is 87227017.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71072273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250113 + ... + 250396.

It is an arithmetic number, because the mean of its divisors is an integer number (13513770).

Almost surely, 2^71072278 is an apocalyptic number.

71072278 is a deficient number, since it is larger than the sum of its proper divisors (37037882).

71072278 is a wasteful number, since it uses less digits than its factorization.

71072278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500582.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 71072278 is about 8430.4375924385. The cubic root of 71072278 is about 414.2222390379. Note that the first 4 decimals are identical.

The spelling of 71072278 in words is "seventy-one million, seventy-two thousand, two hundred seventy-eight".