20200401 has 48 divisors (see below), whose sum is σ = 34257600. Its totient is φ = 11726208.

The previous prime is 20200393. The next prime is 20200429. The reversal of 20200401 is 10400202.

It is not a de Polignac number, because 20200401 - 2³ = 20200393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20200441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86581 + ... + 86813.

It is an arithmetic number, because the mean of its divisors is an integer number (713700).

Almost surely, 2^20200401 is an apocalyptic number.

It is an amenable number.

20200401 is a deficient number, since it is larger than the sum of its proper divisors (14057199).

20200401 is a wasteful number, since it uses less digits than its factorization.

20200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20200401 is about 4494.4856212919. The cubic root of 20200401 is about 272.3453702864.

Adding to 20200401 its reverse (10400202), we get a palindrome (30600603).

The spelling of 20200401 in words is "twenty million, two hundred thousand, four hundred one".