71352772 has 6 divisors (see below), whose sum is σ = 124867358. Its totient is φ = 35676384.

The previous prime is 71352769. The next prime is 71352773. The reversal of 71352772 is 27725317.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55860676 + 15492096 = 7474^2 + 3936^2 .

It is not an unprimeable number, because it can be changed into a prime (71352773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8919093 + ... + 8919100.

Almost surely, 2^71352772 is an apocalyptic number.

It is an amenable number.

71352772 is a deficient number, since it is larger than the sum of its proper divisors (53514586).

71352772 is a wasteful number, since it uses less digits than its factorization.

71352772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17838197 (or 17838195 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 71352772 is about 8447.0570022938. The cubic root of 71352772 is about 414.7664471899.

The spelling of 71352772 in words is "seventy-one million, three hundred fifty-two thousand, seven hundred seventy-two".