20261270 has 16 divisors (see below), whose sum is σ = 36985248. Its totient is φ = 7990080.

The previous prime is 20261261. The next prime is 20261273. The reversal of 20261270 is 7216202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13559 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (2311578).

Almost surely, 2^20261270 is an apocalyptic number.

20261270 is a deficient number, since it is larger than the sum of its proper divisors (16723978).

20261270 is a wasteful number, since it uses less digits than its factorization.

20261270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28615.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20261270 is about 4501.2520480417. The cubic root of 20261270 is about 272.6186448535.

Adding to 20261270 its reverse (7216202), we get a palindrome (27477472).

The spelling of 20261270 in words is "twenty million, two hundred sixty-one thousand, two hundred seventy".