20875477 has 8 divisors (see below), whose sum is σ = 23904576. Its totient is φ = 17858112.

The previous prime is 20875453. The next prime is 20875483. The reversal of 20875477 is 77457802.

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

It is a cyclic number.

It is not a de Polignac number, because 20875477 - 2¹⁵ = 20842709 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 (20875427) 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, 1293 + ... + 6589.

It is an arithmetic number, because the mean of its divisors is an integer number (2988072).

Almost surely, 2^20875477 is an apocalyptic number.

It is an amenable number.

20875477 is a deficient number, since it is larger than the sum of its proper divisors (3029099).

20875477 is an equidigital number, since it uses as much as digits as its factorization.

20875477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 20875477 is about 4568.9689208836. The cubic root of 20875477 is about 275.3460195337.

The spelling of 20875477 in words is "twenty million, eight hundred seventy-five thousand, four hundred seventy-seven".