20303104 has 18 divisors (see below), whose sum is σ = 40527410. Its totient is φ = 10151424.

The previous prime is 20303071. The next prime is 20303111. The reversal of 20303104 is 40130302.

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 518400 = 4448^2 + 720^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39399 + ... + 39910.

Almost surely, 2^20303104 is an apocalyptic number.

It is an amenable number.

20303104 is a deficient number, since it is larger than the sum of its proper divisors (20224306).

20303104 is an frugal number, since it uses more digits than its factorization.

20303104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79325 (or 79311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20303104 is about 4505.8965811479. The cubic root of 20303104 is about 272.8061435997.

Adding to 20303104 its reverse (40130302), we get a palindrome (60433406).

The spelling of 20303104 in words is "twenty million, three hundred three thousand, one hundred four".