71403894 has 12 divisors (see below), whose sum is σ = 154708476. Its totient is φ = 23801292.

The previous prime is 71403863. The next prime is 71403901. The reversal of 71403894 is 49830417.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1983424 + ... + 1983459.

It is an arithmetic number, because the mean of its divisors is an integer number (12892373).

Almost surely, 2^71403894 is an apocalyptic number.

71403894 is an abundant number, since it is smaller than the sum of its proper divisors (83304582).

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

71403894 is a wasteful number, since it uses less digits than its factorization.

71403894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966891 (or 3966888 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 71403894 is about 8450.0824848045. The cubic root of 71403894 is about 414.8654792144.

The spelling of 71403894 in words is "seventy-one million, four hundred three thousand, eight hundred ninety-four".