20730526 has 16 divisors (see below), whose sum is σ = 31860864. Its totient is φ = 10112544.

The previous prime is 20730491. The next prime is 20730529. The reversal of 20730526 is 62503702.

It is a self number, because there is not a number n which added to its sum of digits gives 20730526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730529) 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 in 7 ways as a sum of consecutive naturals, for example, 23200 + ... + 24076.

It is an arithmetic number, because the mean of its divisors is an integer number (1991304).

Almost surely, 2^20730526 is an apocalyptic number.

20730526 is a deficient number, since it is larger than the sum of its proper divisors (11130338).

20730526 is a wasteful number, since it uses less digits than its factorization.

20730526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20730526 is about 4553.0787386119. The cubic root of 20730526 is about 274.7072410630.

The spelling of 20730526 in words is "twenty million, seven hundred thirty thousand, five hundred twenty-six".