162728069 has 24 divisors (see below), whose sum is σ = 193396896. Its totient is φ = 136500000.

The previous prime is 162728051. The next prime is 162728089. The reversal of 162728069 is 960827261.

It is a de Polignac number, because none of the positive numbers 2^k-162728069 is a prime.

It is a super-2 number, since 2×162728069² = 52960848880937522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162728009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648194 + ... + 648444.

It is an arithmetic number, because the mean of its divisors is an integer number (8058204).

Almost surely, 2^162728069 is an apocalyptic number.

It is an amenable number.

162728069 is a deficient number, since it is larger than the sum of its proper divisors (30668827).

162728069 is a wasteful number, since it uses less digits than its factorization.

162728069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 162728069 is about 12756.4912495560. The cubic root of 162728069 is about 545.9516174529.

The spelling of 162728069 in words is "one hundred sixty-two million, seven hundred twenty-eight thousand, sixty-nine".