20695272 has 64 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 6300672.

The previous prime is 20695271. The next prime is 20695277. The reversal of 20695272 is 27259602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20695271) 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 15 ways as a sum of consecutive naturals, for example, 34963 + ... + 35549.

It is an arithmetic number, because the mean of its divisors is an integer number (879795).

Almost surely, 2^20695272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20695272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28153440).

20695272 is an abundant number, since it is smaller than the sum of its proper divisors (35611608).

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

20695272 is a wasteful number, since it uses less digits than its factorization.

20695272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20695272 is about 4549.2056449451. The cubic root of 20695272 is about 274.5514317980.

The spelling of 20695272 in words is "twenty million, six hundred ninety-five thousand, two hundred seventy-two".