20234782 has 16 divisors (see below), whose sum is σ = 31505040. Its totient is φ = 9739008.

The previous prime is 20234759. The next prime is 20234801. The reversal of 20234782 is 28743202.

It is a self number, because there is not a number n which added to its sum of digits gives 20234782.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5769 + ... + 8587.

It is an arithmetic number, because the mean of its divisors is an integer number (1969065).

Almost surely, 2^20234782 is an apocalyptic number.

20234782 is a deficient number, since it is larger than the sum of its proper divisors (11270258).

20234782 is a wasteful number, since it uses less digits than its factorization.

20234782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20234782 is about 4498.3087933133. The cubic root of 20234782 is about 272.4997929466.

Adding to 20234782 its reverse (28743202), we get a palindrome (48977984).

The spelling of 20234782 in words is "twenty million, two hundred thirty-four thousand, seven hundred eighty-two".