20403201 has 24 divisors (see below), whose sum is σ = 33672000. Its totient is φ = 10760256.

The previous prime is 20403197. The next prime is 20403221. The reversal of 20403201 is 10230402.

It is not a de Polignac number, because 20403201 - 2² = 20403197 is a prime.

It is a super-2 number, since 2×20403201² = 832581222092802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20403221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (1403000).

Almost surely, 2^20403201 is an apocalyptic number.

20403201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20403201 is a deficient number, since it is larger than the sum of its proper divisors (13268799).

20403201 is a wasteful number, since it uses less digits than its factorization.

20403201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785 (or 5772 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20403201 is about 4516.9902590110. The cubic root of 20403201 is about 273.2537323563.

Adding to 20403201 its reverse (10230402), we get a palindrome (30633603).

The spelling of 20403201 in words is "twenty million, four hundred three thousand, two hundred one".