71428485 has 32 divisors (see below), whose sum is σ = 118444032. Its totient is φ = 36733760.

The previous prime is 71428481. The next prime is 71428493. The reversal of 71428485 is 58482417.

It is a happy number.

It is not a de Polignac number, because 71428485 - 2² = 71428481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49342 + ... + 50768.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^71428485 is an apocalyptic number.

It is an amenable number.

71428485 is a deficient number, since it is larger than the sum of its proper divisors (47015547).

71428485 is a wasteful number, since it uses less digits than its factorization.

71428485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its digits is 71680, while the sum is 39.

The square root of 71428485 is about 8451.5374341004. The cubic root of 71428485 is about 414.9130993347.

The spelling of 71428485 in words is "seventy-one million, four hundred twenty-eight thousand, four hundred eighty-five".