71272232 has 8 divisors (see below), whose sum is σ = 133635450. Its totient is φ = 35636112.

The previous prime is 71272171. The next prime is 71272247. The reversal of 71272232 is 23227217.

It can be written as a sum of positive squares in only one way, i.e., 71132356 + 139876 = 8434^2 + 374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4454507 + ... + 4454522.

Almost surely, 2^71272232 is an apocalyptic number.

It is an amenable number.

71272232 is a deficient number, since it is larger than the sum of its proper divisors (62363218).

71272232 is a wasteful number, since it uses less digits than its factorization.

71272232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909035 (or 8909031 counting only the distinct ones).

The product of its digits is 2352, while the sum is 26.

The square root of 71272232 is about 8442.2883153799. The cubic root of 71272232 is about 414.6103314781.

Adding to 71272232 its reverse (23227217), we get a palindrome (94499449).

The spelling of 71272232 in words is "seventy-one million, two hundred seventy-two thousand, two hundred thirty-two".