20967272 has 8 divisors (see below), whose sum is σ = 39313650. Its totient is φ = 10483632.

The previous prime is 20967269. The next prime is 20967313. The reversal of 20967272 is 27276902.

It can be written as a sum of positive squares in only one way, i.e., 20921476 + 45796 = 4574^2 + 214^2 .

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

20967272 is a modest number, since divided by 7272 gives 2096 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310447 + ... + 1310462.

Almost surely, 2^20967272 is an apocalyptic number.

It is an amenable number.

20967272 is a deficient number, since it is larger than the sum of its proper divisors (18346378).

20967272 is a wasteful number, since it uses less digits than its factorization.

20967272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620915 (or 2620911 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20967272 is about 4579.0033850173. The cubic root of 20967272 is about 275.7490191966.

The spelling of 20967272 in words is "twenty million, nine hundred sixty-seven thousand, two hundred seventy-two".