71281364 has 24 divisors (see below), whose sum is σ = 155523648. Its totient is φ = 27771840.

The previous prime is 71281337. The next prime is 71281387. The reversal of 71281364 is 46318217.

It is a self number, because there is not a number n which added to its sum of digits gives 71281364.

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, 115409 + ... + 116024.

It is an arithmetic number, because the mean of its divisors is an integer number (6480152).

Almost surely, 2^71281364 is an apocalyptic number.

It is an amenable number.

71281364 is an abundant number, since it is smaller than the sum of its proper divisors (84242284).

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

71281364 is a wasteful number, since it uses less digits than its factorization.

71281364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231455 (or 231453 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 71281364 is about 8442.8291466783. The cubic root of 71281364 is about 414.6280385137.

The spelling of 71281364 in words is "seventy-one million, two hundred eighty-one thousand, three hundred sixty-four".