71428967 has 4 divisors (see below), whose sum is σ = 72407520. Its totient is φ = 70450416.

The previous prime is 71428963. The next prime is 71429003. The reversal of 71428967 is 76982417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71428967 - 2² = 71428963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489167 + ... + 489312.

It is an arithmetic number, because the mean of its divisors is an integer number (18101880).

Almost surely, 2^71428967 is an apocalyptic number.

71428967 is a deficient number, since it is larger than the sum of its proper divisors (978553).

71428967 is an equidigital number, since it uses as much as digits as its factorization.

71428967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978552.

The product of its digits is 169344, while the sum is 44.

The square root of 71428967 is about 8451.5659495741. The cubic root of 71428967 is about 414.9140326116.

The spelling of 71428967 in words is "seventy-one million, four hundred twenty-eight thousand, nine hundred sixty-seven".