71947294 has 4 divisors (see below), whose sum is σ = 107920944. Its totient is φ = 35973646.

The previous prime is 71947279. The next prime is 71947297. The reversal of 71947294 is 49274917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49274917 = 353 ⋅139589.

It is a super-2 number, since 2×71947294² = 10352826227844872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71947294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71947297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17986822 + ... + 17986825.

It is an arithmetic number, because the mean of its divisors is an integer number (26980236).

Almost surely, 2^71947294 is an apocalyptic number.

71947294 is a deficient number, since it is larger than the sum of its proper divisors (35973650).

71947294 is a wasteful number, since it uses less digits than its factorization.

71947294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35973649.

The product of its digits is 127008, while the sum is 43.

The square root of 71947294 is about 8482.1750748260. The cubic root of 71947294 is about 415.9152278879.

The spelling of 71947294 in words is "seventy-one million, nine hundred forty-seven thousand, two hundred ninety-four".