10021398 has 32 divisors (see below), whose sum is σ = 22343040. Its totient is φ = 2977920.

The previous prime is 10021393. The next prime is 10021411. The reversal of 10021398 is 89312001.

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 648 + ... + 4523.

It is an arithmetic number, because the mean of its divisors is an integer number (698220).

Almost surely, 2^10021398 is an apocalyptic number.

10021398 is an abundant number, since it is smaller than the sum of its proper divisors (12321642).

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

10021398 is a wasteful number, since it uses less digits than its factorization.

10021398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 10021398 is about 3165.6591730633. The cubic root of 10021398 is about 215.5970281716.

Adding to 10021398 its reverse (89312001), we get a palindrome (99333399).

The spelling of 10021398 in words is "ten million, twenty-one thousand, three hundred ninety-eight".