10026405 has 24 divisors (see below), whose sum is σ = 17565912. Its totient is φ = 5289984.

The previous prime is 10026397. The next prime is 10026409. The reversal of 10026405 is 50462001.

It is a happy number.

10026405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 772641 + 9253764 = 879^2 + 3042^2 .

It is not a de Polignac number, because 10026405 - 2³ = 10026397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10026409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3217 + ... + 5513.

It is an arithmetic number, because the mean of its divisors is an integer number (731913).

Almost surely, 2^10026405 is an apocalyptic number.

10026405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10026405 is a deficient number, since it is larger than the sum of its proper divisors (7539507).

10026405 is a wasteful number, since it uses less digits than its factorization.

10026405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10026405 is about 3166.4499048619. The cubic root of 10026405 is about 215.6329285049.

Adding to 10026405 its reverse (50462001), we get a palindrome (60488406).

The spelling of 10026405 in words is "ten million, twenty-six thousand, four hundred five".