20285703 has 12 divisors (see below), whose sum is σ = 30312360. Its totient is φ = 13057296.

The previous prime is 20285677. The next prime is 20285719. The reversal of 20285703 is 30758202.

It is not a de Polignac number, because 20285703 - 2²² = 16091399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20285753) 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 11 ways as a sum of consecutive naturals, for example, 38601 + ... + 39122.

It is an arithmetic number, because the mean of its divisors is an integer number (2526030).

Almost surely, 2^20285703 is an apocalyptic number.

20285703 is a deficient number, since it is larger than the sum of its proper divisors (10026657).

20285703 is a wasteful number, since it uses less digits than its factorization.

20285703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77758 (or 77755 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20285703 is about 4503.9652529743. The cubic root of 20285703 is about 272.7281841485.

It can be divided in two parts, 202 and 85703, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 20285703 in words is "twenty million, two hundred eighty-five thousand, seven hundred three".