20863496 has 16 divisors (see below), whose sum is σ = 40381440. Its totient is φ = 10095120.

The previous prime is 20863489. The next prime is 20863537. The reversal of 20863496 is 69436802.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41816 + ... + 42311.

It is an arithmetic number, because the mean of its divisors is an integer number (2523840).

Almost surely, 2^20863496 is an apocalyptic number.

It is an amenable number.

20863496 is a deficient number, since it is larger than the sum of its proper divisors (19517944).

20863496 is a wasteful number, since it uses less digits than its factorization.

20863496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84164 (or 84160 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 20863496 is about 4567.6576053816. The cubic root of 20863496 is about 275.2933332810.

The spelling of 20863496 in words is "twenty million, eight hundred sixty-three thousand, four hundred ninety-six".