20573703 has 16 divisors (see below), whose sum is σ = 30553600. Its totient is φ = 13682520.

The previous prime is 20573687. The next prime is 20573711. The reversal of 20573703 is 30737502.

20573703 is a `hidden beast` number, since 20 + 573 + 70 + 3 = 666.

It is not a de Polignac number, because 20573703 - 2⁴ = 20573687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20573743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16098 + ... + 17328.

It is an arithmetic number, because the mean of its divisors is an integer number (1909600).

Almost surely, 2^20573703 is an apocalyptic number.

20573703 is a deficient number, since it is larger than the sum of its proper divisors (9979897).

20573703 is a wasteful number, since it uses less digits than its factorization.

20573703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 20573703 is about 4535.8244013630. The cubic root of 20573703 is about 274.0127820062.

The spelling of 20573703 in words is "twenty million, five hundred seventy-three thousand, seven hundred three".