20250784 has 24 divisors (see below), whose sum is σ = 40419540. Its totient is φ = 9985536.

The previous prime is 20250779. The next prime is 20250799. The reversal of 20250784 is 48705202.

It can be written as a sum of positive squares in 2 ways, for example, as 20250000 + 784 = 4500^2 + 28^2 .

It is a super-2 number, since 2×20250784² = 820188505229312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999 + ... + 6670.

Almost surely, 2^20250784 is an apocalyptic number.

It is an amenable number.

20250784 is a deficient number, since it is larger than the sum of its proper divisors (20168756).

20250784 is an equidigital number, since it uses as much as digits as its factorization.

20250784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752 (or 8744 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20250784 is about 4500.0871102680. The cubic root of 20250784 is about 272.5716064660.

Adding to 20250784 its reverse (48705202), we get a palindrome (68955986).

The spelling of 20250784 in words is "twenty million, two hundred fifty thousand, seven hundred eighty-four".