220728529469 has 8 divisors (see below), whose sum is σ = 253171868928. Its totient is φ = 188512863120.

The previous prime is 220728529457. The next prime is 220728529537. The reversal of 220728529469 is 964925827022.

It is a happy number.

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 220728529469 - 2⁴ = 220728529453 is a prime.

It is a super-2 number, since 2×220728529469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220728529069) 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, 56916197 + ... + 56920074.

It is an arithmetic number, because the mean of its divisors is an integer number (31646483616).

Almost surely, 2^220728529469 is an apocalyptic number.

It is an amenable number.

220728529469 is a deficient number, since it is larger than the sum of its proper divisors (32443339459).

220728529469 is a wasteful number, since it uses less digits than its factorization.

220728529469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113836555.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 220728529469 in words is "two hundred twenty billion, seven hundred twenty-eight million, five hundred twenty-nine thousand, four hundred sixty-nine".