71282940 has 24 divisors (see below), whose sum is σ = 199592400. Its totient is φ = 19008768.

The previous prime is 71282929. The next prime is 71282971. The reversal of 71282940 is 4928217.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593965 + ... + 594084.

It is an arithmetic number, because the mean of its divisors is an integer number (8316350).

Almost surely, 2^71282940 is an apocalyptic number.

It is an amenable number.

71282940 is an abundant number, since it is smaller than the sum of its proper divisors (128309460).

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

71282940 is a wasteful number, since it uses less digits than its factorization.

71282940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188061 (or 1188059 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 71282940 is about 8442.9224798052. The cubic root of 71282940 is about 414.6310942398.

The spelling of 71282940 in words is "seventy-one million, two hundred eighty-two thousand, nine hundred forty".