20477882 has 4 divisors (see below), whose sum is σ = 30716826. Its totient is φ = 10238940.

The previous prime is 20477881. The next prime is 20477893. The reversal of 20477882 is 28877402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 4405801 = 4009^2 + 2099^2 .

It is not an unprimeable number, because it can be changed into a prime (20477881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5119469 + ... + 5119472.

Almost surely, 2^20477882 is an apocalyptic number.

20477882 is a deficient number, since it is larger than the sum of its proper divisors (10238944).

20477882 is a wasteful number, since it uses less digits than its factorization.

20477882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238943.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 20477882 is about 4525.2493853930. The cubic root of 20477882 is about 273.5867195570.

The spelling of 20477882 in words is "twenty million, four hundred seventy-seven thousand, eight hundred eighty-two".