20387203 has 8 divisors (see below), whose sum is σ = 21582000. Its totient is φ = 19225248.

The previous prime is 20387201. The next prime is 20387219. The reversal of 20387203 is 30278302.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20387203 - 2¹ = 20387201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20387201) 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, 6928 + ... + 9421.

It is an arithmetic number, because the mean of its divisors is an integer number (2697750).

Almost surely, 2^20387203 is an apocalyptic number.

20387203 is a deficient number, since it is larger than the sum of its proper divisors (1194797).

20387203 is a wasteful number, since it uses less digits than its factorization.

20387203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16421.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20387203 is about 4515.2190423057. The cubic root of 20387203 is about 273.1822949339.

The spelling of 20387203 in words is "twenty million, three hundred eighty-seven thousand, two hundred three".