20824419 has 16 divisors (see below), whose sum is σ = 34617600. Its totient is φ = 10817760.

The previous prime is 20824417. The next prime is 20824423. The reversal of 20824419 is 91442802.

It is not a de Polignac number, because 20824419 - 2¹ = 20824417 is a prime.

It is a super-2 number, since 2×20824419² = 867312853375122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20824417) 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 15 ways as a sum of consecutive naturals, for example, 44844 + ... + 45305.

It is an arithmetic number, because the mean of its divisors is an integer number (2163600).

Almost surely, 2^20824419 is an apocalyptic number.

20824419 is a deficient number, since it is larger than the sum of its proper divisors (13793181).

20824419 is a wasteful number, since it uses less digits than its factorization.

20824419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90170.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20824419 is about 4563.3780251038. The cubic root of 20824419 is about 275.1213525021.

The spelling of 20824419 in words is "twenty million, eight hundred twenty-four thousand, four hundred nineteen".