20241405 has 24 divisors (see below), whose sum is σ = 36036312. Its totient is φ = 10502784.

The previous prime is 20241383. The next prime is 20241421. The reversal of 20241405 is 50414202.

20241405 is a `hidden beast` number, since 20 + 241 + 405 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1397124 + 18844281 = 1182^2 + 4341^2 .

It is not a de Polignac number, because 20241405 - 2⁶ = 20241341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4414 + ... + 7743.

It is an arithmetic number, because the mean of its divisors is an integer number (1501513).

Almost surely, 2^20241405 is an apocalyptic number.

It is an amenable number.

20241405 is a deficient number, since it is larger than the sum of its proper divisors (15794907).

20241405 is a wasteful number, since it uses less digits than its factorization.

20241405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12205 (or 12202 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20241405 is about 4499.0448986424. The cubic root of 20241405 is about 272.5295201305.

Adding to 20241405 its reverse (50414202), we get a palindrome (70655607).

The spelling of 20241405 in words is "twenty million, two hundred forty-one thousand, four hundred five".