7287272 has 8 divisors (see below), whose sum is σ = 13663650. Its totient is φ = 3643632.

The previous prime is 7287233. The next prime is 7287277. The reversal of 7287272 is 2727827.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 454276 = 2614^2 + 674^2 .

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

7287272 is a modest number, since divided by 7272 gives 728 as remainder.

It is not an unprimeable number, because it can be changed into a prime (7287277) 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 as a sum of consecutive naturals, namely, 455447 + ... + 455462.

Almost surely, 2^7287272 is an apocalyptic number.

It is an amenable number.

7287272 is a deficient number, since it is larger than the sum of its proper divisors (6376378).

7287272 is a wasteful number, since it uses less digits than its factorization.

7287272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910915 (or 910911 counting only the distinct ones).

The product of its digits is 21952, while the sum is 35.

The square root of 7287272 is about 2699.4947675445. The cubic root of 7287272 is about 193.8749326745.

It can be divided in two parts, 728 and 7272, that added together give a cube (8000 = 20³).

The spelling of 7287272 in words is "seven million, two hundred eighty-seven thousand, two hundred seventy-two".