71489894 has 16 divisors (see below), whose sum is σ = 129004800. Its totient is φ = 29025864.

The previous prime is 71489857. The next prime is 71489897. The reversal of 71489894 is 49898417.

It is a super-2 number, since 2×71489894² = 10221609888262472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71489897) 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, 134114 + ... + 134645.

It is an arithmetic number, because the mean of its divisors is an integer number (8062800).

Almost surely, 2^71489894 is an apocalyptic number.

71489894 is a deficient number, since it is larger than the sum of its proper divisors (57514906).

71489894 is a wasteful number, since it uses less digits than its factorization.

71489894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268787.

The product of its digits is 580608, while the sum is 50.

The square root of 71489894 is about 8455.1696612191. The cubic root of 71489894 is about 415.0319692796.

The spelling of 71489894 in words is "seventy-one million, four hundred eighty-nine thousand, eight hundred ninety-four".