20842496 has 24 divisors (see below), whose sum is σ = 41678910. Its totient is φ = 10420224.

The previous prime is 20842483. The next prime is 20842499. The reversal of 20842496 is 69424802.

It can be written as a sum of positive squares in only one way, i.e., 16516096 + 4326400 = 4064^2 + 2080^2 .

It is not an unprimeable number, because it can be changed into a prime (20842499) by changing a digit.

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 as a sum of consecutive naturals, namely, 3041 + ... + 7136.

Almost surely, 2^20842496 is an apocalyptic number.

It is an amenable number.

20842496 is a deficient number, since it is larger than the sum of its proper divisors (20836414).

20842496 is an equidigital number, since it uses as much as digits as its factorization.

20842496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10199 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 20842496 is about 4565.3582553837. The cubic root of 20842496 is about 275.2009374405.

The spelling of 20842496 in words is "twenty million, eight hundred forty-two thousand, four hundred ninety-six".