20485154 has 16 divisors (see below), whose sum is σ = 32896800. Its totient is φ = 9537984.

The previous prime is 20485121. The next prime is 20485159. The reversal of 20485154 is 45158402.

It is not an unprimeable number, because it can be changed into a prime (20485159) 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, 2327 + ... + 6810.

It is an arithmetic number, because the mean of its divisors is an integer number (2056050).

Almost surely, 2^20485154 is an apocalyptic number.

20485154 is a deficient number, since it is larger than the sum of its proper divisors (12411646).

20485154 is a wasteful number, since it uses less digits than its factorization.

20485154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 20485154 is about 4526.0528057017. The cubic root of 20485154 is about 273.6191006267.

It can be divided in two parts, 204 and 85154, that added together give a palindrome (85358).

The spelling of 20485154 in words is "twenty million, four hundred eighty-five thousand, one hundred fifty-four".