20340524 has 6 divisors (see below), whose sum is σ = 35595924. Its totient is φ = 10170260.

The previous prime is 20340521. The next prime is 20340539. The reversal of 20340524 is 42504302.

It is a junction number, because it is equal to n+sod(n) for n = 20340496 and 20340505.

It is not an unprimeable number, because it can be changed into a prime (20340521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542562 + ... + 2542569.

It is an arithmetic number, because the mean of its divisors is an integer number (5932654).

Almost surely, 2^20340524 is an apocalyptic number.

It is an amenable number.

20340524 is a deficient number, since it is larger than the sum of its proper divisors (15255400).

20340524 is a wasteful number, since it uses less digits than its factorization.

20340524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085135 (or 5085133 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20340524 is about 4510.0470064069. The cubic root of 20340524 is about 272.9736408243.

Adding to 20340524 its reverse (42504302), we get a palindrome (62844826).

The spelling of 20340524 in words is "twenty million, three hundred forty thousand, five hundred twenty-four".