20867272 has 8 divisors (see below), whose sum is σ = 39126150. Its totient is φ = 10433632.

The previous prime is 20867261. The next prime is 20867281. The reversal of 20867272 is 27276802.

It can be written as a sum of positive squares in only one way, i.e., 19412836 + 1454436 = 4406^2 + 1206^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304197 + ... + 1304212.

Almost surely, 2^20867272 is an apocalyptic number.

It is an amenable number.

20867272 is a deficient number, since it is larger than the sum of its proper divisors (18258878).

20867272 is a wasteful number, since it uses less digits than its factorization.

20867272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608415 (or 2608411 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20867272 is about 4568.0709276455. The cubic root of 20867272 is about 275.3099403558.

The spelling of 20867272 in words is "twenty million, eight hundred sixty-seven thousand, two hundred seventy-two".