165278232 has 160 divisors (see below), whose sum is σ = 536659200. Its totient is φ = 46547136.

The previous prime is 165278227. The next prime is 165278237. The reversal of 165278232 is 232872561.

165278232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165278227) and next prime (165278237).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165278237) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 376269 + ... + 376707.

It is an arithmetic number, because the mean of its divisors is an integer number (3354120).

Almost surely, 2^165278232 is an apocalyptic number.

165278232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165278232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268329600).

165278232 is an abundant number, since it is smaller than the sum of its proper divisors (371380968).

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

165278232 is a wasteful number, since it uses less digits than its factorization.

165278232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 534 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 165278232 is about 12856.0581828179. The cubic root of 165278232 is about 548.7887747848.

The spelling of 165278232 in words is "one hundred sixty-five million, two hundred seventy-eight thousand, two hundred thirty-two".