161528536 has 16 divisors (see below), whose sum is σ = 326163600. Its totient is φ = 74551584.

The previous prime is 161528533. The next prime is 161528567. The reversal of 161528536 is 635825161.

It is a junction number, because it is equal to n+sod(n) for n = 161528495 and 161528504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161528533) 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 3 ways as a sum of consecutive naturals, for example, 776476 + ... + 776683.

It is an arithmetic number, because the mean of its divisors is an integer number (20385225).

Almost surely, 2^161528536 is an apocalyptic number.

It is an amenable number.

161528536 is an abundant number, since it is smaller than the sum of its proper divisors (164635064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161528536 is a wasteful number, since it uses less digits than its factorization.

161528536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553178 (or 1553174 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 161528536 is about 12709.3877114517. The cubic root of 161528536 is about 544.6068325578.

The spelling of 161528536 in words is "one hundred sixty-one million, five hundred twenty-eight thousand, five hundred thirty-six".