20478703 has 8 divisors (see below), whose sum is σ = 23463200. Its totient is φ = 17508960.

The previous prime is 20478691. The next prime is 20478719. The reversal of 20478703 is 30787402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20478703 - 2¹⁷ = 20347631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472703) 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, 528 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (2932900).

Almost surely, 2^20478703 is an apocalyptic number.

20478703 is a deficient number, since it is larger than the sum of its proper divisors (2984497).

20478703 is an equidigital number, since it uses as much as digits as its factorization.

20478703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20478703 is about 4525.3400977164. The cubic root of 20478703 is about 273.5903757245.

The spelling of 20478703 in words is "twenty million, four hundred seventy-eight thousand, seven hundred three".