20477061 has 48 divisors (see below), whose sum is σ = 35717760. Its totient is φ = 11172480.

The previous prime is 20477059. The next prime is 20477077. The reversal of 20477061 is 16077402.

It is not a de Polignac number, because 20477061 - 2¹ = 20477059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20477461) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 890296 + ... + 890318.

It is an arithmetic number, because the mean of its divisors is an integer number (744120).

Almost surely, 2^20477061 is an apocalyptic number.

It is an amenable number.

20477061 is a deficient number, since it is larger than the sum of its proper divisors (15240699).

20477061 is a wasteful number, since it uses less digits than its factorization.

20477061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20477061 is about 4525.1586712512. The cubic root of 20477061 is about 273.5830632919.

The spelling of 20477061 in words is "twenty million, four hundred seventy-seven thousand, sixty-one".