161256032 has 24 divisors (see below), whose sum is σ = 362826576. Its totient is φ = 69109632.

The previous prime is 161256031. The next prime is 161256047. The reversal of 161256032 is 230652161.

It is a junction number, because it is equal to n+sod(n) for n = 161255992 and 161256010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161256031) 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 3 ways as a sum of consecutive naturals, for example, 359723 + ... + 360170.

It is an arithmetic number, because the mean of its divisors is an integer number (15117774).

Almost surely, 2^161256032 is an apocalyptic number.

It is an amenable number.

161256032 is an abundant number, since it is smaller than the sum of its proper divisors (201570544).

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

161256032 is an equidigital number, since it uses as much as digits as its factorization.

161256032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719910 (or 719902 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 161256032 is about 12698.6626067472. The cubic root of 161256032 is about 544.3004035754.

The spelling of 161256032 in words is "one hundred sixty-one million, two hundred fifty-six thousand, thirty-two".