168261632 has 144 divisors (see below), whose sum is σ = 426993840. Its totient is φ = 64880640.

The previous prime is 168261593. The next prime is 168261637. The reversal of 168261632 is 236162861.

It is a junction number, because it is equal to n+sod(n) for n = 168261592 and 168261601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168261637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1734608 + ... + 1734704.

It is an arithmetic number, because the mean of its divisors is an integer number (2965235).

Almost surely, 2^168261632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168261632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213496920).

168261632 is an abundant number, since it is smaller than the sum of its proper divisors (258732208).

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

168261632 is an equidigital number, since it uses as much as digits as its factorization.

168261632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 117 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 168261632 is about 12971.5701439725. The cubic root of 168261632 is about 552.0711243507.

The spelling of 168261632 in words is "one hundred sixty-eight million, two hundred sixty-one thousand, six hundred thirty-two".