71272272 has 40 divisors (see below), whose sum is σ = 185854176. Its totient is φ = 23533696.

The previous prime is 71272259. The next prime is 71272277. The reversal of 71272272 is 27227217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71272277) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1803 + ... + 12074.

Almost surely, 2^71272272 is an apocalyptic number.

It is an amenable number.

71272272 is an abundant number, since it is smaller than the sum of its proper divisors (114581904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71272272 is a wasteful number, since it uses less digits than its factorization.

71272272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13995 (or 13989 counting only the distinct ones).

The product of its digits is 5488, while the sum is 30.

The square root of 71272272 is about 8442.2906844055. The cubic root of 71272272 is about 414.6104090417.

Adding to 71272272 its reverse (27227217), we get a palindrome (98499489).

The spelling of 71272272 in words is "seventy-one million, two hundred seventy-two thousand, two hundred seventy-two".