71428383 has 24 divisors (see below), whose sum is σ = 112646352. Its totient is φ = 43348608.

The previous prime is 71428369. The next prime is 71428387. The reversal of 71428383 is 38382417.

It is not a de Polignac number, because 71428383 - 2⁴ = 71428367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4360 + ... + 12722.

It is an arithmetic number, because the mean of its divisors is an integer number (4693598).

Almost surely, 2^71428383 is an apocalyptic number.

71428383 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

71428383 is a deficient number, since it is larger than the sum of its proper divisors (41217969).

71428383 is a wasteful number, since it uses less digits than its factorization.

71428383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8455 (or 8452 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 71428383 is about 8451.5313996932. The cubic root of 71428383 is about 414.9129018357.

The spelling of 71428383 in words is "seventy-one million, four hundred twenty-eight thousand, three hundred eighty-three".