71218414 has 16 divisors (see below), whose sum is σ = 109940688. Its totient is φ = 34575552.

The previous prime is 71218339. The next prime is 71218417. The reversal of 71218414 is 41481217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71218417) 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, 62857 + ... + 63979.

It is an arithmetic number, because the mean of its divisors is an integer number (6871293).

Almost surely, 2^71218414 is an apocalyptic number.

71218414 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

71218414 is a deficient number, since it is larger than the sum of its proper divisors (38722274).

71218414 is a wasteful number, since it uses less digits than its factorization.

71218414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019.

The product of its digits is 1792, while the sum is 28.

The square root of 71218414 is about 8439.1003074972. The cubic root of 71218414 is about 414.5059471248.

The spelling of 71218414 in words is "seventy-one million, two hundred eighteen thousand, four hundred fourteen".