71880293 has 4 divisors (see below), whose sum is σ = 72009900. Its totient is φ = 71750688.

The previous prime is 71880271. The next prime is 71880323. The reversal of 71880293 is 39208817.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38725729 + 33154564 = 6223^2 + 5758^2 .

It is a cyclic number.

It is not a de Polignac number, because 71880293 - 2¹⁸ = 71618149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71880223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63968 + ... + 65081.

It is an arithmetic number, because the mean of its divisors is an integer number (18002475).

Almost surely, 2^71880293 is an apocalyptic number.

It is an amenable number.

71880293 is a deficient number, since it is larger than the sum of its proper divisors (129607).

71880293 is a wasteful number, since it uses less digits than its factorization.

71880293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129606.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 71880293 is about 8478.2246372693. The cubic root of 71880293 is about 415.7860806125.

The spelling of 71880293 in words is "seventy-one million, eight hundred eighty thousand, two hundred ninety-three".