71428975 has 6 divisors (see below), whose sum is σ = 88571960. Its totient is φ = 57143160.

The previous prime is 71428963. The next prime is 71429003. The reversal of 71428975 is 57982417.

It is not a de Polignac number, because 71428975 - 2¹⁵ = 71396207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428555 + ... + 1428604.

Almost surely, 2^71428975 is an apocalyptic number.

71428975 is a deficient number, since it is larger than the sum of its proper divisors (17142985).

71428975 is a wasteful number, since it uses less digits than its factorization.

71428975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857169 (or 2857164 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 71428975 is about 8451.5664228591. The cubic root of 71428975 is about 414.9140481016.

The spelling of 71428975 in words is "seventy-one million, four hundred twenty-eight thousand, nine hundred seventy-five".