71428568 has 8 divisors (see below), whose sum is σ = 133928580. Its totient is φ = 35714280.

The previous prime is 71428559. The next prime is 71428571. The reversal of 71428568 is 86582417.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4464278 + ... + 4464293.

Almost surely, 2^71428568 is an apocalyptic number.

It is an amenable number.

71428568 is a deficient number, since it is larger than the sum of its proper divisors (62500012).

71428568 is a wasteful number, since it uses less digits than its factorization.

71428568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928577 (or 8928573 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 71428568 is about 8451.5423444481. The cubic root of 71428568 is about 414.9132600445.

The spelling of 71428568 in words is "seventy-one million, four hundred twenty-eight thousand, five hundred sixty-eight".