20252772 has 18 divisors (see below), whose sum is σ = 51194598. Its totient is φ = 6750912.

The previous prime is 20252767. The next prime is 20252777. The reversal of 20252772 is 27725202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20252767) and next prime (20252777).

It can be written as a sum of positive squares in only one way, i.e., 15163236 + 5089536 = 3894^2 + 2256^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (20252777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281253 + ... + 281324.

Almost surely, 2^20252772 is an apocalyptic number.

It is an amenable number.

20252772 is an abundant number, since it is smaller than the sum of its proper divisors (30941826).

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

20252772 is a wasteful number, since it uses less digits than its factorization.

20252772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562587 (or 562582 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20252772 is about 4500.3079894603. The cubic root of 20252772 is about 272.5805255383.

Adding to 20252772 its reverse (27725202), we get a palindrome (47977974).

The spelling of 20252772 in words is "twenty million, two hundred fifty-two thousand, seven hundred seventy-two".