71486428 has 48 divisors (see below), whose sum is σ = 143730720. Its totient is φ = 30818304.

The previous prime is 71486423. The next prime is 71486431. The reversal of 71486428 is 82468417.

It is a super-2 number, since 2×71486428² = 10220618776398368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71486423) 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 15 ways as a sum of consecutive naturals, for example, 170403 + ... + 170821.

It is an arithmetic number, because the mean of its divisors is an integer number (2994390).

Almost surely, 2^71486428 is an apocalyptic number.

It is an amenable number.

71486428 is an abundant number, since it is smaller than the sum of its proper divisors (72244292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71486428 is a wasteful number, since it uses less digits than its factorization.

71486428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 644 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 71486428 is about 8454.9646953728. The cubic root of 71486428 is about 415.0252619257.

The spelling of 71486428 in words is "seventy-one million, four hundred eighty-six thousand, four hundred twenty-eight".