71972493 has 8 divisors (see below), whose sum is σ = 96346656. Its totient is φ = 47790000.

The previous prime is 71972449. The next prime is 71972501. The reversal of 71972493 is 39427917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71972493 - 2¹⁸ = 71710349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71972413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47038 + ... + 48543.

It is an arithmetic number, because the mean of its divisors is an integer number (12043332).

Almost surely, 2^71972493 is an apocalyptic number.

It is an amenable number.

71972493 is a deficient number, since it is larger than the sum of its proper divisors (24374163).

71972493 is a wasteful number, since it uses less digits than its factorization.

71972493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95835.

The product of its digits is 95256, while the sum is 42.

The square root of 71972493 is about 8483.6603538803. The cubic root of 71972493 is about 415.9637792829.

The spelling of 71972493 in words is "seventy-one million, nine hundred seventy-two thousand, four hundred ninety-three".