71894836 has 48 divisors (see below), whose sum is σ = 144619776. Its totient is φ = 30979584.

The previous prime is 71894807. The next prime is 71894843. The reversal of 71894836 is 63849817.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147385 + ... + 147871.

It is an arithmetic number, because the mean of its divisors is an integer number (3012912).

Almost surely, 2^71894836 is an apocalyptic number.

It is an amenable number.

71894836 is an abundant number, since it is smaller than the sum of its proper divisors (72724940).

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

71894836 is a wasteful number, since it uses less digits than its factorization.

71894836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 686 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 71894836 is about 8479.0822616602. The cubic root of 71894836 is about 415.8141196803.

The spelling of 71894836 in words is "seventy-one million, eight hundred ninety-four thousand, eight hundred thirty-six".