20770529 has 8 divisors (see below), whose sum is σ = 22469160. Its totient is φ = 19086336.

The previous prime is 20770523. The next prime is 20770567. The reversal of 20770529 is 92507702.

It can be written as a sum of positive squares in 4 ways, for example, as 1760929 + 19009600 = 1327^2 + 4360^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20770529 - 2²⁰ = 19721953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20770495 and 20770504.

It is not an unprimeable number, because it can be changed into a prime (20770523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (2808645).

Almost surely, 2^20770529 is an apocalyptic number.

It is an amenable number.

20770529 is a deficient number, since it is larger than the sum of its proper divisors (1698631).

20770529 is a wasteful number, since it uses less digits than its factorization.

20770529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 20770529 is about 4557.4695830033. The cubic root of 20770529 is about 274.8838253087.

The spelling of 20770529 in words is "twenty million, seven hundred seventy thousand, five hundred twenty-nine".