20489252 has 18 divisors (see below), whose sum is σ = 41710662. Its totient is φ = 8781024.

The previous prime is 20489237. The next prime is 20489257. The reversal of 20489252 is 25298402.

It can be written as a sum of positive squares in only one way, i.e., 10916416 + 9572836 = 3304^2 + 3094^2 .

It is not an unprimeable number, because it can be changed into a prime (20489257) 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, 52073 + ... + 52464.

It is an arithmetic number, because the mean of its divisors is an integer number (2317259).

Almost surely, 2^20489252 is an apocalyptic number.

It is an amenable number.

20489252 is an abundant number, since it is smaller than the sum of its proper divisors (21221410).

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

20489252 is a wasteful number, since it uses less digits than its factorization.

20489252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104555 (or 104546 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20489252 is about 4526.5054954125. The cubic root of 20489252 is about 273.6373449987.

The spelling of 20489252 in words is "twenty million, four hundred eighty-nine thousand, two hundred fifty-two".