20484250 has 16 divisors (see below), whose sum is σ = 38346984. Its totient is φ = 8193600.

The previous prime is 20484241. The next prime is 20484251. The reversal of 20484250 is 5248402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9308601 + 11175649 = 3051^2 + 3343^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20484251) 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, 40719 + ... + 41218.

Almost surely, 2^20484250 is an apocalyptic number.

20484250 is a deficient number, since it is larger than the sum of its proper divisors (17862734).

20484250 is an equidigital number, since it uses as much as digits as its factorization.

20484250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81954 (or 81944 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 20484250 is about 4525.9529383324. The cubic root of 20484250 is about 273.6150756743.

The spelling of 20484250 in words is "twenty million, four hundred eighty-four thousand, two hundred fifty".