20232782 has 4 divisors (see below), whose sum is σ = 30349176. Its totient is φ = 10116390.

The previous prime is 20232781. The next prime is 20232787. The reversal of 20232782 is 28723202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28723202 = 2 ⋅14361601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232781) 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 as a sum of consecutive naturals, namely, 5058194 + ... + 5058197.

It is an arithmetic number, because the mean of its divisors is an integer number (7587294).

Almost surely, 2^20232782 is an apocalyptic number.

20232782 is a deficient number, since it is larger than the sum of its proper divisors (10116394).

20232782 is a wasteful number, since it uses less digits than its factorization.

20232782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10116393.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20232782 is about 4498.0864820499. The cubic root of 20232782 is about 272.4908147172.

Adding to 20232782 its reverse (28723202), we get a palindrome (48955984).

The spelling of 20232782 in words is "twenty million, two hundred thirty-two thousand, seven hundred eighty-two".