10028391 has 16 divisors (see below), whose sum is σ = 14100480. Its totient is φ = 6327200.

The previous prime is 10028383. The next prime is 10028393. The reversal of 10028391 is 19382001.

10028391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10028391 - 2³ = 10028383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10028393) 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, 6250 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (881280).

Almost surely, 2^10028391 is an apocalyptic number.

10028391 is a deficient number, since it is larger than the sum of its proper divisors (4072089).

10028391 is a wasteful number, since it uses less digits than its factorization.

10028391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

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

The square root of 10028391 is about 3166.7634897479. The cubic root of 10028391 is about 215.6471648713.

The spelling of 10028391 in words is "ten million, twenty-eight thousand, three hundred ninety-one".