71980923 has 32 divisors (see below), whose sum is σ = 112859136. Its totient is φ = 39955968.

The previous prime is 71980921. The next prime is 71980927. The reversal of 71980923 is 32908917.

It is not a de Polignac number, because 71980923 - 2¹ = 71980921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71980921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229815 + ... + 230127.

It is an arithmetic number, because the mean of its divisors is an integer number (3526848).

Almost surely, 2^71980923 is an apocalyptic number.

71980923 is a deficient number, since it is larger than the sum of its proper divisors (40878213).

71980923 is a wasteful number, since it uses less digits than its factorization.

71980923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 71980923 is about 8484.1571767619. The cubic root of 71980923 is about 415.9800189953.

The spelling of 71980923 in words is "seventy-one million, nine hundred eighty thousand, nine hundred twenty-three".