20404703 has 8 divisors (see below), whose sum is σ = 23227776. Its totient is φ = 17743000.

The previous prime is 20404697. The next prime is 20404711. The reversal of 20404703 is 30740402.

It is a happy number.

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

It is not a de Polignac number, because 20404703 - 2¹⁶ = 20339167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40073 + ... + 40578.

It is an arithmetic number, because the mean of its divisors is an integer number (2903472).

Almost surely, 2^20404703 is an apocalyptic number.

20404703 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20404703 is a deficient number, since it is larger than the sum of its proper divisors (2823073).

20404703 is a wasteful number, since it uses less digits than its factorization.

20404703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80685.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20404703 is about 4517.1565171023. The cubic root of 20404703 is about 273.2604374649.

The spelling of 20404703 in words is "twenty million, four hundred four thousand, seven hundred three".