20477485 has 8 divisors (see below), whose sum is σ = 28083456. Its totient is φ = 14041680.

The previous prime is 20477467. The next prime is 20477489. The reversal of 20477485 is 58477402.

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

It is not a de Polignac number, because 20477485 - 2⁷ = 20477357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477489) 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, 292501 + ... + 292570.

It is an arithmetic number, because the mean of its divisors is an integer number (3510432).

Almost surely, 2^20477485 is an apocalyptic number.

It is an amenable number.

20477485 is a deficient number, since it is larger than the sum of its proper divisors (7605971).

20477485 is an equidigital number, since it uses as much as digits as its factorization.

20477485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585083.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 20477485 is about 4525.2055201946. The cubic root of 20477485 is about 273.5849515580.

The spelling of 20477485 in words is "twenty million, four hundred seventy-seven thousand, four hundred eighty-five".