71478215 has 8 divisors (see below), whose sum is σ = 85821120. Its totient is φ = 57151072.

The previous prime is 71478203. The next prime is 71478221. The reversal of 71478215 is 51287417.

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

It is a cyclic number.

It is not a de Polignac number, because 71478215 - 2⁶ = 71478151 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11666 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (10727640).

Almost surely, 2^71478215 is an apocalyptic number.

71478215 is a deficient number, since it is larger than the sum of its proper divisors (14342905).

71478215 is a wasteful number, since it uses less digits than its factorization.

71478215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7881.

The product of its digits is 15680, while the sum is 35.

The square root of 71478215 is about 8454.4789904523. The cubic root of 71478215 is about 415.0093673794.

The spelling of 71478215 in words is "seventy-one million, four hundred seventy-eight thousand, two hundred fifteen".