71172308 has 6 divisors (see below), whose sum is σ = 124551546. Its totient is φ = 35586152.

The previous prime is 71172307. The next prime is 71172329. The reversal of 71172308 is 80327117.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 6980164 = 8012^2 + 2642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71172301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8896535 + ... + 8896542.

It is an arithmetic number, because the mean of its divisors is an integer number (20758591).

Almost surely, 2^71172308 is an apocalyptic number.

It is an amenable number.

71172308 is a deficient number, since it is larger than the sum of its proper divisors (53379238).

71172308 is a wasteful number, since it uses less digits than its factorization.

71172308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793081 (or 17793079 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 71172308 is about 8436.3681759392. The cubic root of 71172308 is about 414.4164789862.

The spelling of 71172308 in words is "seventy-one million, one hundred seventy-two thousand, three hundred eight".