20772535 has 8 divisors (see below), whose sum is σ = 28488096. Its totient is φ = 14244000.

The previous prime is 20772517. The next prime is 20772547. The reversal of 20772535 is 53527702.

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

It is not a de Polignac number, because 20772535 - 2¹⁹ = 20248247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20772497 and 20772506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296716 + ... + 296785.

It is an arithmetic number, because the mean of its divisors is an integer number (3561012).

Almost surely, 2^20772535 is an apocalyptic number.

20772535 is a deficient number, since it is larger than the sum of its proper divisors (7715561).

20772535 is an equidigital number, since it uses as much as digits as its factorization.

20772535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593513.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 20772535 is about 4557.6896559551. The cubic root of 20772535 is about 274.8926743724.

The spelling of 20772535 in words is "twenty million, seven hundred seventy-two thousand, five hundred thirty-five".