71247038 has 8 divisors (see below), whose sum is σ = 106936032. Its totient is φ = 35601696.

The previous prime is 71247037. The next prime is 71247067. The reversal of 71247038 is 83074217.

It is a happy number.

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

It is a super-2 number, since 2×71247038² = 10152280847546888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71246995 and 71247013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71247037) 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, 6470 + ... + 13577.

It is an arithmetic number, because the mean of its divisors is an integer number (13367004).

Almost surely, 2^71247038 is an apocalyptic number.

71247038 is a deficient number, since it is larger than the sum of its proper divisors (35688994).

71247038 is a wasteful number, since it uses less digits than its factorization.

71247038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71247038 is about 8440.7960525059. The cubic root of 71247038 is about 414.5614722265.

The spelling of 71247038 in words is "seventy-one million, two hundred forty-seven thousand, thirty-eight".