10021404 has 12 divisors (see below), whose sum is σ = 23383304. Its totient is φ = 3340464.

The previous prime is 10021393. The next prime is 10021411. The reversal of 10021404 is 40412001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 835117 = 10021404 / (1 + 0 + 0 + 2 + 1 + 4 + 0 + 4).

It is a nialpdrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 10021404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417547 + ... + 417570.

Almost surely, 2^10021404 is an apocalyptic number.

It is an amenable number.

10021404 is an abundant number, since it is smaller than the sum of its proper divisors (13361900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021404 is a wasteful number, since it uses less digits than its factorization.

10021404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835124 (or 835122 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10021404 is about 3165.6601207331. The cubic root of 10021404 is about 215.5970711989.

Adding to 10021404 its reverse (40412001), we get a palindrome (50433405).

The spelling of 10021404 in words is "ten million, twenty-one thousand, four hundred four".