20296784 has 10 divisors (see below), whose sum is σ = 39325050. Its totient is φ = 10148384.

The previous prime is 20296777. The next prime is 20296789. The reversal of 20296784 is 48769202.

It can be written as a sum of positive squares in only one way, i.e., 19536400 + 760384 = 4420^2 + 872^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20296789) 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 as a sum of consecutive naturals, namely, 634259 + ... + 634290.

It is an arithmetic number, because the mean of its divisors is an integer number (3932505).

Almost surely, 2^20296784 is an apocalyptic number.

It is an amenable number.

20296784 is a deficient number, since it is larger than the sum of its proper divisors (19028266).

20296784 is a wasteful number, since it uses less digits than its factorization.

20296784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268557 (or 1268551 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20296784 is about 4505.1952232950. The cubic root of 20296784 is about 272.7778340736. Note that the first 3 decimals are identical.

The spelling of 20296784 in words is "twenty million, two hundred ninety-six thousand, seven hundred eighty-four".