20120782 has 8 divisors (see below), whose sum is σ = 32924952. Its totient is φ = 9145800.

The previous prime is 20120773. The next prime is 20120783. The reversal of 20120782 is 28702102.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 914581 = 20120782 / (2 + 0 + 1 + 2 + 0 + 7 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120783) 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 3 ways as a sum of consecutive naturals, for example, 457269 + ... + 457312.

It is an arithmetic number, because the mean of its divisors is an integer number (4115619).

Almost surely, 2^20120782 is an apocalyptic number.

20120782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20120782 is a deficient number, since it is larger than the sum of its proper divisors (12804170).

20120782 is a wasteful number, since it uses less digits than its factorization.

20120782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914594.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20120782 is about 4485.6194666958. The cubic root of 20120782 is about 271.9870866851.

Adding to 20120782 its reverse (28702102), we get a palindrome (48822884).

It can be divided in two parts, 20120 and 782, that added together give a palindrome (20902).

The spelling of 20120782 in words is "twenty million, one hundred twenty thousand, seven hundred eighty-two".