71400688 has 20 divisors (see below), whose sum is σ = 142802368. Its totient is φ = 34548480.

The previous prime is 71400677. The next prime is 71400691. The reversal of 71400688 is 88600417.

It is a happy number.

71400688 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71481 + ... + 72472.

Almost surely, 2^71400688 is an apocalyptic number.

It is an amenable number.

71400688 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71400688 is a wasteful number, since it uses less digits than its factorization.

71400688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143992 (or 143986 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 71400688 is about 8449.8927803848. The cubic root of 71400688 is about 414.8592700356.

The spelling of 71400688 in words is "seventy-one million, four hundred thousand, six hundred eighty-eight".