20020752 has 30 divisors (see below), whose sum is σ = 56030702. Its totient is φ = 6673536.

The previous prime is 20020723. The next prime is 20020753. The reversal of 20020752 is 25702002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 2178576 = 4224^2 + 1476^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20020753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69373 + ... + 69660.

Almost surely, 2^20020752 is an apocalyptic number.

It is an amenable number.

20020752 is an abundant number, since it is smaller than the sum of its proper divisors (36009950).

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

20020752 is a wasteful number, since it uses less digits than its factorization.

20020752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139047 (or 139038 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 20020752 is about 4474.4554975997. The cubic root of 20020752 is about 271.5356118646.

Adding to 20020752 its reverse (25702002), we get a palindrome (45722754).

The spelling of 20020752 in words is "twenty million, twenty thousand, seven hundred fifty-two".