71428508 has 24 divisors (see below), whose sum is σ = 129654000. Its totient is φ = 34391168.

The previous prime is 71428507. The next prime is 71428517. The reversal of 71428508 is 80582417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67568 + ... + 68616.

It is an arithmetic number, because the mean of its divisors is an integer number (5402250).

Almost surely, 2^71428508 is an apocalyptic number.

It is an amenable number.

71428508 is a deficient number, since it is larger than the sum of its proper divisors (58225492).

71428508 is a wasteful number, since it uses less digits than its factorization.

71428508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 71428508 is about 8451.5387947994. The cubic root of 71428508 is about 414.9131438688.

The spelling of 71428508 in words is "seventy-one million, four hundred twenty-eight thousand, five hundred eight".