20185485 has 8 divisors (see below), whose sum is σ = 32296800. Its totient is φ = 10765584.

The previous prime is 20185483. The next prime is 20185499. The reversal of 20185485 is 58458102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20185485 - 2¹ = 20185483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20185483) 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, 672835 + ... + 672864.

It is an arithmetic number, because the mean of its divisors is an integer number (4037100).

Almost surely, 2^20185485 is an apocalyptic number.

It is an amenable number.

20185485 is a deficient number, since it is larger than the sum of its proper divisors (12111315).

20185485 is a wasteful number, since it uses less digits than its factorization.

20185485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345707.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 20185485 is about 4492.8259481088. The cubic root of 20185485 is about 272.2783203992.

It can be divided in two parts, 2018 and 5485, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 20185485 in words is "twenty million, one hundred eighty-five thousand, four hundred eighty-five".