20824090 has 16 divisors (see below), whose sum is σ = 42838272. Its totient is φ = 7139664.

The previous prime is 20824073. The next prime is 20824103. The reversal of 20824090 is 9042802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148674 + ... + 148813.

It is an arithmetic number, because the mean of its divisors is an integer number (2677392).

Almost surely, 2^20824090 is an apocalyptic number.

20824090 is an abundant number, since it is smaller than the sum of its proper divisors (22014182).

20824090 is a wasteful number, since it uses less digits than its factorization.

20824090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297501.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20824090 is about 4563.3419771041. The cubic root of 20824090 is about 275.1199036357.

Adding to 20824090 its reverse (9042802), we get a palindrome (29866892).

The spelling of 20824090 in words is "twenty million, eight hundred twenty-four thousand, ninety".