20424519 has 12 divisors (see below), whose sum is σ = 30222192. Its totient is φ = 13284000.

The previous prime is 20424517. The next prime is 20424533. The reversal of 20424519 is 91542402.

20424519 is a `hidden beast` number, since 204 + 2 + 451 + 9 = 666.

It is not a de Polignac number, because 20424519 - 2¹ = 20424517 is a prime.

It is a super-2 number, since 2×20424519² = 834321952762722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20424492 and 20424501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27307 + ... + 28044.

It is an arithmetic number, because the mean of its divisors is an integer number (2518516).

Almost surely, 2^20424519 is an apocalyptic number.

20424519 is a deficient number, since it is larger than the sum of its proper divisors (9797673).

20424519 is a wasteful number, since it uses less digits than its factorization.

20424519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55398 (or 55395 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20424519 is about 4519.3494000796. The cubic root of 20424519 is about 273.3488676808.

It can be divided in two parts, 2042 and 4519, that added together give a 8-th power (6561 = 3⁸).

The spelling of 20424519 in words is "twenty million, four hundred twenty-four thousand, five hundred nineteen".