20342524 has 24 divisors (see below), whose sum is σ = 36435168. Its totient is φ = 9935040.

The previous prime is 20342503. The next prime is 20342527. The reversal of 20342524 is 42524302.

It is a junction number, because it is equal to n+sod(n) for n = 20342495 and 20342504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64014 + ... + 64330.

It is an arithmetic number, because the mean of its divisors is an integer number (1518132).

Almost surely, 2^20342524 is an apocalyptic number.

It is an amenable number.

20342524 is a deficient number, since it is larger than the sum of its proper divisors (16092644).

20342524 is a wasteful number, since it uses less digits than its factorization.

20342524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20342524 is about 4510.2687281358. The cubic root of 20342524 is about 272.9825873225.

Adding to 20342524 its reverse (42524302), we get a palindrome (62866826).

The spelling of 20342524 in words is "twenty million, three hundred forty-two thousand, five hundred twenty-four".