10328421 has 4 divisors (see below), whose sum is σ = 13771232. Its totient is φ = 6885612.

The previous prime is 10328413. The next prime is 10328431. The reversal of 10328421 is 12482301.

10328421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10328421 - 2³ = 10328413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10328411) 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 3 ways as a sum of consecutive naturals, for example, 1721401 + ... + 1721406.

It is an arithmetic number, because the mean of its divisors is an integer number (3442808).

Almost surely, 2^10328421 is an apocalyptic number.

It is an amenable number.

10328421 is a deficient number, since it is larger than the sum of its proper divisors (3442811).

10328421 is an equidigital number, since it uses as much as digits as its factorization.

10328421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442810.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 10328421 is about 3213.7860849783. The cubic root of 10328421 is about 217.7766488924.

It can be divided in two parts, 1032 and 8421, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 10328421 in words is "ten million, three hundred twenty-eight thousand, four hundred twenty-one".