20540524 has 6 divisors (see below), whose sum is σ = 35945924. Its totient is φ = 10270260.

The previous prime is 20540519. The next prime is 20540537. The reversal of 20540524 is 42504502.

It is a junction number, because it is equal to n+sod(n) for n = 20540495 and 20540504.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2567562 + ... + 2567569.

Almost surely, 2^20540524 is an apocalyptic number.

It is an amenable number.

20540524 is a deficient number, since it is larger than the sum of its proper divisors (15405400).

20540524 is a wasteful number, since it uses less digits than its factorization.

20540524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135135 (or 5135133 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20540524 is about 4532.1654868286. The cubic root of 20540524 is about 273.8654035507.

The spelling of 20540524 in words is "twenty million, five hundred forty thousand, five hundred twenty-four".