20730602 has 4 divisors (see below), whose sum is σ = 31095906. Its totient is φ = 10365300.

The previous prime is 20730587. The next prime is 20730607. The reversal of 20730602 is 20603702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 758641 = 4469^2 + 871^2 .

It is not an unprimeable number, because it can be changed into a prime (20730607) 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, 5182649 + ... + 5182652.

Almost surely, 2^20730602 is an apocalyptic number.

20730602 is a deficient number, since it is larger than the sum of its proper divisors (10365304).

20730602 is a wasteful number, since it uses less digits than its factorization.

20730602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10365303.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20730602 is about 4553.0870846053. The cubic root of 20730602 is about 274.7075767632.

The spelling of 20730602 in words is "twenty million, seven hundred thirty thousand, six hundred two".