20774782 has 32 divisors (see below), whose sum is σ = 38646720. Its totient is φ = 8171520.

The previous prime is 20774753. The next prime is 20774783. The reversal of 20774782 is 28747702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8694 + ... + 10822.

It is an arithmetic number, because the mean of its divisors is an integer number (1207710).

Almost surely, 2^20774782 is an apocalyptic number.

20774782 is a deficient number, since it is larger than the sum of its proper divisors (17871938).

20774782 is a wasteful number, since it uses less digits than its factorization.

20774782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 20774782 is about 4557.9361557617. The cubic root of 20774782 is about 274.9025858824.

It can be divided in two parts, 2077 and 4782, that added together give a cube (6859 = 19³).

The spelling of 20774782 in words is "twenty million, seven hundred seventy-four thousand, seven hundred eighty-two".