20853004 has 6 divisors (see below), whose sum is σ = 36492764. Its totient is φ = 10426500.

The previous prime is 20852981. The next prime is 20853023. The reversal of 20853004 is 40035802.

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 as a sum of consecutive naturals, namely, 2606622 + ... + 2606629.

Almost surely, 2^20853004 is an apocalyptic number.

It is an amenable number.

20853004 is a deficient number, since it is larger than the sum of its proper divisors (15639760).

20853004 is a wasteful number, since it uses less digits than its factorization.

20853004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213255 (or 5213253 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20853004 is about 4566.5089510478. The cubic root of 20853004 is about 275.2471783131.

Adding to 20853004 its reverse (40035802), we get a palindrome (60888806).

The spelling of 20853004 in words is "twenty million, eight hundred fifty-three thousand, four".