20524490 has 16 divisors (see below), whose sum is σ = 42221952. Its totient is φ = 7036944.

The previous prime is 20524451. The next prime is 20524499. The reversal of 20524490 is 9442502.

It is not an unprimeable number, because it can be changed into a prime (20524499) 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 7 ways as a sum of consecutive naturals, for example, 146534 + ... + 146673.

It is an arithmetic number, because the mean of its divisors is an integer number (2638872).

Almost surely, 2^20524490 is an apocalyptic number.

20524490 is an abundant number, since it is smaller than the sum of its proper divisors (21697462).

20524490 is a wasteful number, since it uses less digits than its factorization.

20524490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293221.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20524490 is about 4530.3962299119. The cubic root of 20524490 is about 273.7941249251.

Adding to 20524490 its reverse (9442502), we get a palindrome (29966992).

The spelling of 20524490 in words is "twenty million, five hundred twenty-four thousand, four hundred ninety".