71012838 has 16 divisors (see below), whose sum is σ = 152950896. Its totient is φ = 21850080.

The previous prime is 71012803. The next prime is 71012857. The reversal of 71012838 is 83821017.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455133 + ... + 455288.

It is an arithmetic number, because the mean of its divisors is an integer number (9559431).

Almost surely, 2^71012838 is an apocalyptic number.

71012838 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

71012838 is an abundant number, since it is smaller than the sum of its proper divisors (81938058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71012838 is a wasteful number, since it uses less digits than its factorization.

71012838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910439.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 71012838 is about 8426.9115338895. The cubic root of 71012838 is about 414.1067310993.

The spelling of 71012838 in words is "seventy-one million, twelve thousand, eight hundred thirty-eight".